[bmacho]

Yes, opening random pdfs especially in random and old pdf viewers is not a good idea.

If you must open a possibly infected pdf, then do it in browser, pdf.js is considered mostly safe, and updated.

[rvnx]

Use the PDF to JPG online services, convenient and you still get your result without having to deal with any sandbox

[bpt3]

Except of course that you're sharing the contents of that PDF with a random online service.

[rvnx]

True, I just considered that once you handle a PDF with so much care like if it was poisoned, it's perhaps better to send this poison to someone else to handle.