Subject: I think I have an answer...
Author:
Posted on: 2017-10-22 22:59:00 UTC

I looked in the PDF, and I'm pretty sure that the reason it's so big is that 3DES is using a very large font size. Seriously: I'm reading this on my phone, and I never had to zoom in on the text at all.

As for concerns about the file... By default it will open in a PDF.js window embedded in the webpage 3DES linked you to. So for it to damage your computer, it would not only have to find an exploit in PDF.js, it would also have to break your browser's sandbox.

TL;DR, the PDF is safe to read on the webpage. If you're really paranoid, I can check the PDF sources, but I find it unlikely that there is any danger there whatsoever.

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