in attached project you can find document bui.pdf created as print to PDF from Office 365 desktop app. When I try to read links nothing is found.
On the other side, I have working.pdf document that is created with Save as PDF from Office 2016 and links are properly recognized.
We have tested the scenario in our environment while using Aspose.PDF for .NET 20.10 and noticed that API was unable to find any link in both PDF files. Are you sure that it is extracting links from one PDF file at your side? Furthermore, we have logged an issue as PDFNET-49023 in our issue tracking system for investigation. We will look into details of this scenario and keep you posted with the status of its correction. Please be patient and spare us some time.