Is this a good idea? And can you think of any ways it could be effective?

[Spreading]

So when trying to view a .url or .pdf.url exploit in my browser, it comes up with "Something went wrong" or "This pdf file cannot be viewed"

But it's more or less the same look in each browser ff/chrome/edge.

What if it were changed to this though https://prnt.sc/RZuQNSQ_fZCd

But having thought of that, what other things can be done with legit .pdf's, can you link from pdf files? I will have to do some testing. If my theory is correct; I can design a pdf to make them download the .url !

Thoughts?