Adding a PDF or document file to the dropdown menus in WordPress takes a few steps but is fairly quick and simple once you have done it a few times. The basic steps of this are:
- Upload the PDF to the media library
- Copy the URL for the path to the file in the media library
- Add a Link to the menu or update an existing one with that file path
The following screenshots outline in detail the process of adding or changing a link to a pdf in a WordPress dropdown menu.