He contended that the multiple layers of the PDF document are anomalous.
"When a paper document is scanned on a scanner and saved as a PDF file it normally contains only a single layer of graphical information. The PDF that appears on the White House website however, contains multiple layers of graphic information. Multiple layers usually appear in a document like this when it is being edited or modified in some fashion," his report said.
"It is possible to take a single layer PDF and inadvertently create multiple layers, without changing the image in any fashion. But that does not appear to be the case here. The multiple layers in the PDF document are a result of changes made to the image."
Zatkovich told WND that the White House image "has specific content extracted from that base layer and enhanced."
He said, "This was done through an explicit operation to edit and/or enhance the printing in the document. There is no ambiguity here. There was an explicit action by a person to modify the document. … Mostly like to enhance the legibility, but still an explicit action none the less."
He explained the analysis he did was similar to the analysis that routinely is done on evidentiary documents for cell phones and computers in cases involving child porn, fraud and murder cases.
It's probably a load of nonsense though, I took a look at that WND site and it seems to be a conspiracy theory haven. Nonetheless, I thought it was interesting.