Hello!
I will keep an eye and keep you informed.
It because I am not in front the computer, I was using teamviewer on my mobile to execute the procedure that you requested on the infected machine.
Avast usually only detects 2 times a day theses randoms URLS (always trying to download a DLL file).
As this infected computer is associated to my avast account, I will be notified if a new detection occurs, so I will be able to give you a more precise position about this issue.
Really thanks for your time!