Am I the only one here that finds it hilarious that bsa.org gives companies that pirate software a followed link? Oh man, that is rich. The giggles keep coming.
It's an expensive link, but maybe your company should turn itself in for piracy? 
They're only shooting themselves in the foot with the duplicate content.
The site's link profile doesn't look 'shockingly' black hat, though there are some shady spots. It looks like a lot of the newer links were made because the site was scraped. I've found quite a few, at random, that redirect to some Chinese ccTLD. That might be one of the reasons you can't find the link.
Besides, even crap links can possibly prop up a domain for a little while. (Not recommended) But a site may eventually get hit, or it will drop a bit after new low quality links ebb.
Maybe you just don't have the domain age... there's a bunch of things.
(That was a serious(ly fun) internet smile right there, bro.)