The birther movement pains me every time I hear it. It is the worse logic I have ever heard, and I immediately lose respect for any person that mentions it like it's possibly true. It pains me not just to see this stuff here rather than reddit, but the fact that enough people upvoted this so that it would get to the top of the 'Ask' section of HN. I wish the government never would have released Obama's birth certificate, because it only serves to somehow validate that the birther's claim "might" be true and thus must be disproved.
To the original poster: Don't take this personally. I actually enjoyed hearing you breakdown how this pdf was composed. Not only would pdf composition/hacking articles be interesting, but they would also be appropriate for HN. Write a blog, I'd check it out...