False Positive?

Hello.
You might be a victim of adware, so do the following:

1. Start your PC in Safe Mode, by following these steps:
   https://support.microsoft.com/en-us/windows/start-your-pc-in-safe-mode-in-windows-92c27cff-db89-8644-1ce4-b3e5e56fe234
2. Open the Run command:
   https://www.makeuseof.com/windows-open-run-command-dialog-box/
   and run the below commands one by one:
   temp - delete all the folders/files in the folder
   %temp% - delete all the folders/files in the folder
   prefetch - delete all the folders/files in the folder
3. Restart your PC in General Mode, by following these steps:
   https://www.techwalla.com/articles/how-to-restart-a-computer-in-normal-mode
4. Reset/Refresh your browsers:
   Google Chrome - https://support.google.com/chrome/answer/3296214?hl=en
   Mozilla Firefox - https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings
   Microsoft Edge - https://malwaretips.com/blogs/reset-microsoft-edge/
   Opera - https://browsersolution.com/reset-opera-browser
   Vivaldi - https://help.vivaldi.com/desktop/install-update/full-reset-of-vivaldi/
   Brave - https://support.brave.com/hc/en-us/articles/360017903152-How-do-I-reset-Brave-settings-to-default-
5. Run a System Scan with your Bitdefender program.
6. Restart your PC.
7. Scan (and disinfect, if needed) your PC with Bitdefender Rescue Environment:
   https://www.bitdefender.com/consumer/support/answer/29132/
8. Restart your PC.
9. If the steps provided above didn't help, do the following steps:
   Take screenshot(s) of the issue,
   create a log file on your Windows device using Bitdefender Support Tool, by following these steps:
   https://www.bitdefender.com/consumer/support/answer/1733/
   and
   create a log file on your Windows device using BDsysLog, by following these steps:
   https://www.bitdefender.com/consumer/support/answer/1922/
   Next, contact Bitdefender Consumer Support by e-mail:
   https://www.bitdefender.com/consumer/support/help/
   with short description of the issue.
   After that, you will get an automated reply by the Bitdefender Customer Care Team, with your ticket number.
   Now, in reply to that automated reply, you can send the screenshot(s) you already took and the log files you already created in the first step.
   Since you are all done, just wait for the support engineers to investigate your issue and find a solution to fix the issue.
   Remember that the screenshot(s) and the log files will help a lot to the support engineers for better and faster investigation on your issue and finding a solution.
   NOTE: If any of the log file is larger than 25MB, you can upload the log file here:
   https://upload.bitdefender.net/
   After the upload is done, you will get a notification with the file's URL and then you can share the file's URL with the Bitdefender Consumer Support.
   Regards.

The website indeed contains much malicious JavaScript. Kindly have a look at the link stated below.

https://sitecheck.sucuri.net/results/https/premierlawns.co.uk

The website and the malicious JavaScript that it downloads have been shared with the malware research team for detection. The VirusTotal link below should be updated as soon as the detection becomes available.

https://www.virustotal.com/gui/file/7fbb8c30346a51303dbf21d04ae29637eb03f2e5de9f50929d743031f1deaea5

https://www.virustotal.com/gui/url/013ce54494112c71c7dc4807dcd8585b1980730051339e72cba61d82176a57ab

@garioch7 In the past, I've contacted various support teams for different antimalware vendors. They confirm that detections in their product may not always show up on VirusTotal. VirusTotal's updates depend on vendor database URLs provided, but not all detections are guaranteed. Uncertainty exists about how often VirusTotal updates databases from different vendors.

Regards