I need to check at what time the pdf was made using adobe mobile app.
Hope you are doing well.
Thank you for posting your query here. You can sort your files by date. It will then display the date at bottom of the files.
When in the All-Scans view, you can sort your files by file name or by scan date. A check shows you the current sort method.
For more details refer to https://www.adobe.com/devnet-docs/adobescan/android/en/findingfiles.html#sort-by-name-or-date
You can also try this workaround for viewing the time stamp using Acrobat Reader Dc.
Let us know how it works at your end. If you have any further queries please feel free to reach out to us. We would be more than happy to assist you.