Some of the link-like text in the PDF’s was used to get the pictures of the “french” looking trains and countryside. I’m not sure what the conclusion was, if any, from that trail of clues.
Here’s the original discussion/discovery by @bcatrek :May 12-15 STU44 1$ HAPP3N1NG Command Center v12 CRASHED + Arnaud's Health - #63 by bcatrek