Quark Soup by David Appell: The "fake" Memo Definitely Looks Suspicious

Here is the metadata from the 9 alleged Heartland Institute documents Desmogblog put up yesterday. The first one is the one the Heartland Institute calls fake, and it clearly stands out from the rest by its creation data -- only two days ago -- and the fact that it's scanned.
...Desmogblog's first post about these documents was yesterday (2/14) at 14:13. I'm not exactly sure what time zone that is, but this means -- if I'm downloading and interpreting this data correctly -- they posted this document within about 24 hours of it being created.

Does that seem likely? Maybe, but I would think they would have first done some vetting and checking and had discussions among themselves and maybe even a lawyer.

So I am really wondering if, indeed, this file is fake. And again, why was it scanned if the documents were leaked via email?