If you're download tv or books, then you should be okay as you won't be executing anything. I wouldn't trust software pirated from there (or other places).

Are books and video generally low probability as attack vectors then? Are PDFs harder to exploit?

Ofcourse they are. Majority of that stuff isn't executable, or if it is, it relies on exploits of viewers, so by using something else you are probably safe.

Also, there are sandboxes if you are unsure and you can convert to safer formats.

Anyway, I yet have to meet somebody that was fucked up this way, I guess there are numerious easier options.

Its way more probably that your country will hunt you, if you live in that lame country in which case VPN is a thing :)

Adobe Acrobat (Reader) opens PDFs from download locations in “Protected View” by default, which disables potentially dangerous dynamic features, and also by default opens all PDFs in a “Protected Mode” sandbox which restricts otherwise possible system access. You want to make sure that those are active. I believe that’s on Windows only, not sure what the implications are on other systems.

Without those restrictions, PDFs can execute embedded JavaScript on open, which can access and execute local files.

Preview on a Mac doesn't execute JavaScript in PDFs. To make sure you are not spreading anything to anyone, open the PDF in Preview and print it.

Same thing with Word.

Not sure how ebook readers handle js or xml exploits.

I have used Rutracker for almost ten years without one bit of malware.

You can use Windows sandbox or Sandboxie to test it out and do a sanity check, but in general, yes, it seesm OK. You never know though, given the current state of afairs in the world.

On the other hand, you can find almost anything there, faaar more then on most other places.