How can I use the PDF for a URL?

You can use PDF embedder widget to attach your PDF file, then share your form URL https://www.jotform.com/help/401-Where-to-Find-My-Form-URL to your customers / users and they should be able to view your PDF via form URL.

Reference guide: https://www.jotform.com/help/153-How-to-Display-a-PDF-Document-on-Your-Form

Let us know if you have any questions or if you need further assistance.