Generally, It is suggested to not trust anything around in security. It's not a big deal to fool around virustotal scans with a relatively new crypter and it makes us believe that the file is safe.
I would suggest to use a virtualbox environment to download the leaks. Try to use a Linux Based OS like ubuntu because its way damn easy to get into windows. Ofcourse, Linux can be hacked too but not as easily as windows.
Even if the file does not have virus, it can have a downloader in it which can download virus later on.
Better use it in virtualbox. Use Linux (Qubes OS if possible cause the system requirements are higher)