Use case or problem
As a user with an extensive PDF library managed on my filesystem with 3rd-party tools (e.g., Zotero, DevonTHINK, etc.) outside of my Obsidian vaults, I would like to be able to embed the PDFs in Obsidian notes from their location on the filesystem.
Proposed solution
Enable the same syntax for PDFs that allows remote embedding of images, namely:

Current workaround (optional)
No known workaround.
Related feature requests (optional)
No known feature requests, though it is mentioned in this post.
Thanks!