Static HTML pages for detection user's AV can see in /detect/ folder.
Article for this simple technique wrote here https://vah13.github.io/AVDetection/
The main idea for the writing of this mini article came after reading this article "Remote detection of a user's AV using Flash https://github.com/GrrrDog/FlashAV" @GrrrDog
Thank you @GrrrDog and @antranigv
https://twitter.com/vah_13