Student's .exe file showing as virus

A student’s file is showing in edge as virus detected when trying to download. In Defender it says it includes the trojan Win32/Phonzy.B!ml
Is this a common bug or is it most likely that one of the assets used does in fact have a virus? If one of the assets does have a virus, what’s the best way to figure out which one it is? I couldn’t find a technical support area so I assume this is the best place to ask.

Many thanks