That is exactly the stuff that some people swear makes it legit, that is apparently what happens if you turn a scan into a .pdf with Illustrator.
If this doc is fake, people a lot smarter than me will prove it, but the fact they released a .pdf makes it very difficult to do forensics on it, so I have read.
Hey, I’m no expert here, but I have been all over reading about this today and I’m convinced it is real. As always, my opinion is worth exactly what you paid for it ;)