Chrome/Edge PDF viewers are pretty secure. You can reasonably safely open anything in them.
Desktop PDF viewers like acrobat are gaping security holes... Don't use them!
Desktop PDF viewers like acrobat are gaping security holes... Don't use them!
Most malware these days can't function without internet connectivity. The exploits typically connect to a server to get the rest of their code because they don't want any pesky researchers getting their hands on stuff.