How do I debug a problematic PDF?

I received some PDFs from the US Internal Revenue Service (notices with unique information for me, and yes, I trust they really came from the IRS) that crash the 2 very different HP printers I tried to print them on. I complained to HP support about it and they were no help, suggesting that it was a hardware problem with the printer. (I highly doubt it is a hardware problem given that it fails on 2 different models of HP printers from different generations. The newest printer has updated firmware that is less than 6 months old, so I believe this is a live bug in HP firmware.) So I am looking f

Question by Old Pro on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.