SCP-1471-A's article pic is a black and white edit of this DeviantArt submission. It's apparently been used in a couple other creepypastas, so the author (Lurk D on Wikidot) might have found it through one. The (fur)suit itself, named Breynz the Zombie, was a commission by Qarrazel, another DeviantArt user. I linked the SCP to Tarangryph, the suit's owner if you didn't click the second link, and she seemed happy to hear about it.
Tara's used Breynz in a number of other photos. Here's a few: