It is a layered PDF. Nuff’ said.
Even I know how to eliminate the layers. It was part of my job, at one time, to remove everything unwanted from documents before release. All sorts of crap can be attached to a PDF. A writing team needs a neutral party to review documents for clean up.
My conclusion is that the BC released was supposed to be discovered to be a fake, as it was here on FR soon after release onto the internet. The purpose was to blow smoke in everyones eyes. The more confusion, the better for Obama and company.