Of course. But then again, most of the internet is infested with malware. It's just that anyone with something other than a gentle breeze flowing between their ears usually has enough sense not to visit those sites because:
1) They're obvious as hell as to contain malware
2) There are trusted alternatives to almost all of them
With that in mind, while most of the game cracks might be infested with malware, these are the cracks you'd find by searching "[game name] crack torrent" and jumping over the first 10 pages. On the other hand, there's this site called something like The Bay of Pirates which I hear is quite popular, that has a system for marking trusted uploaders. If you were to check those cracks, you'd find they pretty much never contain malware.
There's also the matter of game cracks identifying as viruses. This isn't to say they are viruses, but the antivirus, like AVG, sees them as such because they're modded .exe files, which it finds suspicious.
If you take all these factors into account and add a dash of sense, you'd find that number unworthy of being identified with the word "crawling". In fact, it would hardly even fit the term "once in a blue moon".
edit: for clarity, as I know mods here come down on piracy first chance they get - this is a collection of facts relevant as a response to the article, not an endorsement of piracy.