This has been making the rounds, but I don't see what the big deal is. It seems that if you do a Google search for "Confidential - Do Not Distribute," a number of hits turn up. G'wan, give it a try. And look at what format most of them seem to be in.
Those files will never be seen by my eyes, at least. I hate PDF documents with a passion, and never open one up unless I have to. If I've got a lot of windows open, the Acrobat reader almost always crashes my browser.