I'm looking for options which would help me render a couple of adobe files ( .indd and .pdf ) that I **will send to someone** unusable after a predetermined date. By unusable, I mean something along the lines of corrupt or expired - something that will not allow the user to view neither the text or the images from the files.

Please let me know if you need more information about this.
So far, I've came across powershell and cron jobs, but both are over my head, and unfortunately, time is not on my side at the moment.

I appreciate you taking the time to read this.
Kind regards.
P.