There are trolls like this asshat all over dnm and onion subs posting btc phishish carding guides and fake source code. I linked to a comment instead of the article because it was a direct link to this scammers pastebin.
A Reddit user notified the mods, but the link still works. See below.
People, please don't fall for these scams. Also, do not download this file.
http://www.reddit.com/r/onions/comments/3tm5ve/working_bitcoin_stealer_with_spreading_guides/cx7dysh
On another note, I think most people are having issues with multi-sig. I know most of you are just going to say "what, it's so easy" or "go read a guide n00b" but really, I think this might be too complicated for many.
Additionally, /u/Vendor_BBMC pointed out the following:
"Other markets are adding multikey escrow, which is absolutely unsafe for vendors. LE can buy one item from us, fund the escrow, watch their bitcoin definitely go to the vendor, then follow it to the exchange. At least silk road and sheepmarketplace pooled all the bitcoin in a massive escrow wallet so you couldn't bust vendors, then work back from that vendor's wallet to bust all his customers."
I posted an example of how easy it would be to infect an insecure system. You can check my post and try it yourself here: https://www.reddit.com/r/DarkNetMarkets/comments/3tns9u/got_fish_take_15_seconds_to_better_understand/
The social engineering required to get people to download this would probably be more hassle than it's worth if you were trying to scam someone. If you're that hellbent on stealing coins, there are much easier ways to do so. Also, who the fuck wouldn't notice that the posted deposit address is entirely different? I check each and every letter in mine any time I send a decent chunk of change anywhere. I would imagine most people at least check the first or last couple characters.