A site I manage is getting a lot of referral traffic from a 3rd party site. The 3rd party site is linking to our site like this: `example.com/page#123abc`. The 3rd party site is using `noreferrer` with the link and they won't add a UTM parameter to the link.

Accordingly the traffic from this 3rd party site is showing up in Google Analytics as Direct traffic and is hard to track.

The `#123abc` part of the URL is unique to this 3rd party site is constant, ie. it doesn't change.

Is there a way in Google Analytics I can track, tag or filter any incoming traffic that lands on page `example.com/page#123abc` so that I can better review it in the same I way I would be able to review it if it was showing the referrer info or had a UTM parameter appended?

We are using Google Analytics Universal tracking.