Researchers at Georgia Tech were able to bypass the protection of 97% of the popular Android antivirus applications tested. The detection rules used by most of the programs appear to be relatively basic, and by presenting their results at the Black Hat USA 2017 conference, the researchers are hoping that developers can improve the performance of their scanners.
https://www.notebookcheck.net/Android-antivirus-software-relatively-easy-to-beat.236934.0.html