We have also seen a few FPs in the forums related to this one Win32:DH-A1.
Harmless FP is a good thing means they are improving the detection

I couldn't quite find threads about the detection from the search function might be because I am on the phone.
It seems like some AI Heuristic detection from AVG.Picks up some of my undetected samples quite regularly.

Btw,thanks for info pondus.Interesting stuff guys.
Best,
TI