I do not know about this specific case, but many cracked copies are true false-positives. Only 28/74 flagged it as malicious. Sure, do your due diligence, but in general it’ll be picked by antiviruses as malware.

I’ve never heard of someone sharing university course material on a tracker or similar for people to download. But have you checked whether there are any MOOCs from reputable universities that are similar to the one you linked? They are often free.