[Dismas]

This looks like a job for @"miso" since he's skilled at analyzing files, but here are a few of my observations. If the files really are infected I suspect they've been infected with the Cerberus RAT, and have also been crypted with an open source obfuscator. Based on detections like "Gen:Variant.Cerbu.76118", "Win32:Trojan-gen", and "VirTool:Win32/Obfuscator.f5993fec" I can conclude that. And since this is a possible remote access tool, I highly doubt whoever created the RAT server is still operating with that same DNS and port.

If you've already ran the program and see nothing abnormal like files you don't remember creating, strange system processes, system slowdowns, system or program crashing on your system, it should be safe to keep using this crack. If this is or was a virus, that would be a different story since virus' spread on their own without the need for human control.

This is actually a good point. I'm certain a lot of cracked applications from 4+ years ago still work, but the malware on them is likely well past a functioning state. Not that you'd want to run the programs, but there might not be any consequences.