UPDATE:
It was removed from Snapchat almost immediately, and nobody knows exactly who it was supposed to be or how it got posted. If it was a hack, it could have been random people having nothing to do with Lana.
After it was removed, there was a replacement link posted by somebody or another at streamja.com, but that is also dead now. The only copy I know of now is on Zippyshare
Story here.