Detect files with applications links in Purview

Hi, 

You can do Content Search in Purview*

• Microsoft Purview → eDiscovery → Content Search and Search for keywords like: http:// OR https:// OR ms-office: OR onenote:

or create Custom SIT. Research :  Get started with Content search | Microsoft Learn 

https://learn.microsoft.com/en-us/microsoft-365/compliance/ediscovery

Content Explorer in Microsoft Purview

https://learn.microsoft.com/en-us/microsoft-365/compliance/data-classification-content-explorer 

Thanks