Didn't work for me. This is basically the command line mupdfclean binary plus a workflow service. In any event, I ran it on a PDF that is password-secured to prevent editing. It made a nice sound after a second to indicate it was done, but the PDF was still secured (I thought it might have created a new unsecured PDF, but a search of my hard drive didn't turn up anything). To be fair, the PDF I tested it on uses Adobe's latest security protocol, and won't even open in Preview on 10.8 as a result (I have to use Acrobat to view it), but it might work on PDFs using an older security protocol.