Hi Mikem,
Are you trying to share the pdf file as link via email? If yes, then you need to use Adobe Send & Track feature to create a link of the pdf and share it via email.
- Click on the Email icon at the upper left corner of Adobe Reader DC app.
- Select Send & Track and select Create Link

- Can copy the link or share it via email.
Also, here are the detailed steps of how you can share pdf link via email and send it out- Share, comment, and review in Adobe Reader
Hope this is what you are looking for.
Regards,
Akanchha