Please modify your post and remove the link to the malware download. The samples should be sent directly to avast and not use the forums as some sudo malware distribution site. These forums are publicly available so you never know who might download it or what use they might put it to. Not to mention if it is an undetected sample then you put avast users at risk.
Send the sample/s to avast as a Undetected Malware:
Open the chest and right click in the Chest and select Add, navigate to where you have the sample and add it to the chest (see image). Once in the chest, right click on the file and select 'Submit to virus lab...' complete the form and submit, the file will be uploaded during the next update.