I didn't see this was a pdf (though you thoughtfully put it in the title) until I'd already downloaded it. Now I cannot empty it from the trash--message says "cannot delete because it is in use". It's not open anywhere and exists only in the trash.

Totally paranoid now!!

ETA: ctl-clicked and "delete immediately" seems to have worked. I'd say don't download this unless you want some letter-agencies to have access to your computer.