wp api – Are there events pub/sub for external application to subscribe to file/pdf uploads by wordpress admin

I have a scenario where a wp admin wants an external application to listen and detect when a pdf has been uploaded to a directory within wordpress.

Ex: a new terms and condition (T&C) document is created and the WP. The site admin upload this file to the sites T&C directory.

When the admin uploads this pdf is there any event emitted that an external application could have a webhook listening to pick up the addition/upload of the new file.