Create a custom slug with a (.) period for redirecting to app-ads.pdf file

I'm attempting to put our ads.pdf on our site. Sadly Squarespace does not allow or support adding files to the root directory. This is a huge problem for app developers! I've found a work around, where you basically, upload the file to a page, find the unique URL for the file, and then redirect to the file by creating a page with the slug ads.pdf. The problem with this solution is that Squarespace does not allow me to make a slug with a (.) period in it. Does anyone have a solution to this problem? Thanks!

You may be able to adapt the following to your needs.

Let us know how it goes.