Investigate files which are shared by a internal shared link

Hi,

Using cloud app security I only want to find the files that have been shared via a "Shared Link - Internal".  But the filter "Access level=Internal" returns all internally shared files, also to the files shared directly to one person. It doesn't seem to be filterable, although in the UI I see under the Collaborators the sharing type "Shared Link - Internal".

Does anyone have any idea how I can filter for this type? An Excel export doesn't help either.

Thx

Jens