Avast virus APP says "Suspicous file detected" after integrated AdSdk with service.

Dear ALL:

I find a problem.
If integrate AdNetwork SDK with service, Avast virus APP will says your APP “Suspicous file detected”.
If this case, all AdNetwork use service and it is not system building service … all are “Suspicous file detected”. (You can build a release apk and install to test. Developer mode not found.)
Is it normal?
Do you have the same problem?
How to resolve this problem?
Thank you for your help.