Hi Matt,

if you are certain that a PDF file was encumbered with DRM
restrictions by mistake, then you can easily remove DRM using a tool
from the free MuPDF software which is available for all major
operating systems including Windows: http://www.mupdf.com/

If you have the current version, the command line goes like this:
mutool clean old.pdf new.pdf

Older versions of MyPDF included a different executable for this:
pdfclean old.pdf new.pdf

As for editing PDF files ... this is not what they are intended for,
but it is possible with tools like PDFedit <http://pdfedit.cz>, Gimp,
Inkscape or Scribus.

Cheers,
Christian


On Mon, Oct 28, 2013 at 01:13:24PM -0400, Matthew Sherman wrote:
> Can anyone give me some advice in how I can edit this to add the
> required note to the top of the PDF?  Any advice is welcome.

--
  Christian Pietsch
  http://purl.org/net/pietsch