What is PDFStars?
PDFStars is an adware extension for Google Chrome and similar browsing applications. It can modify your browser's settings and change your default search engine, new tab, and homepage preferences.
It can redirect you to several suspicious websites as well. They are harmful programs that use devious ways to take control of your computer and deceive you into engaging in their content and downloading their products.
This sort of virus will compromise your browser without your awareness. If installed, it may create several difficulties, including wearing down your browser application and disclosing your personal information. Numerous browser hijackers are remarkably similar to this one.
Once the said threat has obtained access to the device, it will modify your internet browser preferences to change your default search and tab.
In an attempt for PDFStars to gain connection to a person's browser, it utilizes a wide range of tactics. One of these is accessing a malware-infected site, clicking on a harmful link, or accessing a virus-infected email link. Torrents, cracked software downloads, and shady social networking share links are one of the main sources of this harmful malware.
To stop the virus from further doing anything suspicious and dangerous to the computer system, it should be removed as soon as possible. By following the step-by-step procedure given below, you should be able to eliminate the extension as well as other malicious components hidden in the system.
How to remove PDFStars
This procedure will assist you in removing PDFStars as well as any dangers related to the adware infection. You can rest assured that the information provided below has been tried and tested.
Step 1: Use Malwarebytes Anti-Malware
As stated earlier, if you have not found the adware threat in the system, you may utilize a powerful antivirus software. Malwarebytes Anti-Malware is one of the most effective anti-malware programs available. They have some of the greatest threat detection software, ensuring that any unwanted threats on your computer are eliminated. If neither of those methods works, you can utilize this antivirus program to complete the task. Furthermore, even if PDFStars is completely removed from the computer, we recommend that you run a complete scan just in case.
- Visit the antivirus website or click the button above to download the most up-to-date version of the software that best suits your requirements.
- Follow the software installation instructions until they are completed.
- Run a complete malware scan on the machine and wait for it to finish.
- All the detected threats found on the computer will be shown on the screen and clicking the "quarantine" button to remove them.
You have the option to uninstall the application if you choose to after eliminating the infection from the computer. While doing so will deactivate Windows Defender Real-Time Protection, you can read this article to reactivate it after removing Malwarebytes.
Step 2: Find and Remove Unwanted Program
Since this type of computer threat takes the appearance of an extension, it's essential to try and locate the main source of this malicious program and remove it from the system as soon as possible to avoid further harm.
It's worth noting that locating the program can be tricky because many adware programs disguise as legitimate programs or system files. Check the Task Manager for suspicious applications that are running when your browser is experiencing browser hijacker symptoms.
Remove Program via Control Panel
- Search Control Panel in the Windows search bar then click it.
- The Control Panel should open, from there click Programs then Programs and Features.
- A list of installed software will show on the screen after a moment.
- Scroll down and find PDFStars or any suspicious programs you did not download then right-click the application and select Uninstall.
Remove Extension from Browser
Sometimes the source of the problem can be found inside a browser as a web plugin. PDFStars is most likely disguised within the web browser itself if you don't notice any strange files or applications on your computer.
Click the three-dot buttons in the right-hand corner of the Chrome Browser. Find and click More Tools from the drop menu, then select Extensions.
A new tab will appear with all your installed extensions. Find which extension is suspicious and delete it. To deactivate the extension, toggle the blue switch to disable the program. Then click the remove button to fully uninstall it from Google Chrome.
If the switch is disabled: You have to remove the extension from within the extensions folder manually. Go to the Google Chrome extensions folder by using the following directory:
C:\Users\YOUR NAME\AppData\Local\Google\Chrome\User Data\Default\Extensions
You will see a list of folders with different hashes, to find what you need to delete, tick the Developer mode in the Google Chrome extensions tab to show the id of downloaded plugins.
Find the one matching the id of the extension you wish to remove to the one in the folder then delete it. Restart Google Chrome and the extension should be gone.
Click the Menu button in the right corner of Firefox once it's open. Then go to Add-ons and Themes then select Extensions.
Toggle the blue switch to disable the suspicious extension after finding it. Click Remove from the three dots icon on the right side of the extension you want to remove.
Open the Microsoft Edge application then click on the three dots on the upper right. A drop-down menu will show then click Extensions.
A new tab will open and show all installed extensions on the browser. Find the suspicious extension that you might have not installed.
Slide the blue switch to disable the use of the extension. Click on the remove button just below the extension.
Open the Safari browser then click on Safari on the Menu Bar on top. Choose Preferences from the drop menu. A window should appear, then click the Extensions tab.
Search for suspicious extensions you did not install. Click the unwanted extension then select the remove button.
Utilize Revo Uninstaller
For computer users who are not sure of what to do. You may resort to using Revo Uninstaller since it is much more effective and easy to use. Revo Uninstaller is a handy tool for Windows users.
This uninstaller not only removes programs from the computer but also deletes their changes from the Windows Registry, Host File, etc.
- Click the button above and download the latest software that is compatible with your system.
- Open the downloaded file and it should guide you through the setup.
- Follow the installation procedure and wait until the installation of the software is complete.
- After the installation is finished, tick the box that says Launch Revo Uninstaller then click Finish.
- Once the software has launched, find the unwanted application that is needed to be removed, double click the program to uninstall.
- Click on the Continue button and follow the procedure to start uninstalling the program.
- Once it is uninstalled, a window will pop up. Select the Advanced option for the scanning mode then click Scan to find remnants of PDFStars.
- A window will pop up and show all of the leftovers and changes made by the program uninstalled a while ago.
- Click the Select All button and hit Delete to remove the leftovers found on the Windows Registry.
- Some leftover files may be found, click Select All then Delete them as well.
- Once the window closes, you have successfully removed the adware threat from your system.
Step 3: Reset the Browser to Default Settings
Once PDFStars has been removed from the system, we need to make sure that the changes it made from the browser should be turned back to normal. Rather than changing the default homepage and permissions manually, it is much easier to reset the browser to its default settings.
- Open Google Chrome and click the three dots in the upper right corner of your screen to access the Google Chrome menu.
- Click the Settings button, then click the Advanced menu on the left side of the screen from the settings screen.
- On the drop-down menu, select Reset and Clean up
- Click on the Restore settings to their original defaults.
- Then a small window will appear and click the Reset Settings.
- Launch the Mozilla Firefox browser then open the menu by clicking on the three horizontal lines located in the upper right corner.
- Navigate down and click Help then select More Troubleshooting Information from the options given.
- Select the Refresh Firefox button.
- Click Refresh Firefox on the confirmation window that appeared.
- Run Microsoft Edge on the computer and click the three dots icon in the upper right corner.
- Click on the Settings button from the drop-down menu.
- Find and click the Reset Settings from the left sidebar.
- Then click on the option Restore settings to their default values.
- A warning window will appear that you are about to reset the browser, click Reset and the browser should return to its default settings.
Step 4: Scan with Kaspersky Antivirus for Hidden Malware
If you visit a lot of forums and websites, you will see most people agree that Kaspersky is one of the top antivirus tools on the market. Even though we have already removed infestations from the computer system, malware may still be present so it is best to scan once more.
Since each antivirus application has its threat database, Kaspersky's detection technology may be able to find viruses that the prior program missed.
To ensure sure PDFStars and other viruses are totally and undetectably removed from the system, we advise running a scan just in case. If you are downloading the application for the first time, you will also receive a 31-day premium trial.
1. Download the Kaspersky Security Cloud by clicking the button above.
2. Once the setup has finished downloading, open the file and start the installation.
3. Wait until the wizard finds the latest version of the application or click Skip to install the current version stored.
4. Review the License Agreement. If you agree to its terms, click Continue.
5. Follow the installation instructions as shown then finally click install. (You may choose to uncheck the options shown if you do not want those features.)
6. Wait for the application to finish installing, then after the process is complete, click done.
7. Apply the recommended settings then start the application by clicking apply. Feel free to untick the options you do not desire.
8. You will be prompted to create an account and once you are finished, you will be redirected to the main screen. Select the Scan tab then click the run full scan and wait for it to complete. (Before scanning, we recommend you update the database to ensure any new malware variants are detected.)
9. After the scan has finished, the detected threats will be deleted from the computer.
Simple tips to be safe online
- Never acquire software or programs from unknown sources, as this is one of the most common ways for adware and other types of malware to attack your computer. Only download from reputable and legitimate websites. To be safe, stay away from torrent downloads and cracked software download sites, as there will always be malware in the files.
- Using a firewall is one of the most foolproof ways to be safe online. It serves as a first line of defense against dangerous websites, shielding visitors from potential risks. It protects the user's network and device from intruders. A firewall will safeguard a user from the threats hiding on the vast internet in today's age.
- It is essential to keep anti-virus software up to date on a computer since hundreds of new malware threats are released every day that target the machine's vulnerabilities to infect it. Anti-virus updates include the most recent files required to counter new threats and safeguard your machine.
- Only visit websites that have a secured connection. A site with an HTTP connection does not encrypt the data it receives and therefore is not considered secure. Entering personal information such as email addresses, phone numbers, and passwords on a website with an HTTP connection is risky since it could be compromised and your information was stolen. Websites with HTTPS connections, on the other hand, are secure since data is encrypted and attackers are unlikely to gain access to information exchanged within the site.
- Backups are critical for ensuring the safety of your data. Without a thorough backup of the data, several computer dangers and irreversible damage can arise. Backing up your data is a crucial step in ensuring the safety of your information. Having a backup copy of the system and data will be extremely useful in the event of a harmful malware attack.