Ymchen,if you have additional info about your samples.Like what URL they came from? Virustotal results and any related hashes to the malware,mention it in the mail body.
Having additional metadata helps avast classify malware quicker.Also scanning samples from chest is un-reliable as filerep and evo-gen are absent and they only work outside of the chest.
Same with certain reputation and additional features which don't specifically trigger on the sample but on the actual malware URL.
Alot of times we download samples from a 3rd party source and not the actual malware URL.Whereas,avast flags the source URL and "DRep" like detection modules block them.
