A pdf can be posted/linked, here, just like any other URL....that is, if you can open the pdf up in your browser.
This is what I get when I try to open in a browser.
file:///private/var/mobile/Containers/Shared/AppGroup/B17B1F6B-1265-4B57-84E4-81AF6224CF21/telegram-data/temp/app/temp-30ca40d22dcbbc27/1/THE%20VACCINE%20DEATH%20REPORT.pdf