I’ve got imagick available, and the FAQ says that is all that is needed. When I try to add a PDF though, it says .pdf is not allowed.
Make sure it’s allowed in your media source and upload_files system setting too.
Definitely in there, continue getting
Sorry, .pdf files are not allowed.
That’s odd. If you could email email@example.com with a login I’d love to take a look at your site to see what’s getting in the way there.