yeah, Distiller is pretty much for creating PDF.
you just need Full version of Acrobat to edit.
(meaning, for example, you wouldn't have to install the Distiller part of the full Acrobat install)
now then...another thing to consider along with *acquiring* the copy of the application...
is that some PDF's when they are originally created have security applied to them, so that you cannot edit them.
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Hex editing the PDF is an interesting concept, i'll have to try that sometime

oh, and WinHex is also good.
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Therell be days/When Ill stray/I may appear to be/Constantly out of reach/I give in to sin/Because I like to practise what I preach