Open every page of one or more PDFs in Illustrator in one go. Drop the files in, choose the pages and the crop, and each page lands on its own artboard, named after the file and page number, linked or embedded.
See it in the shop · Version 1.4.5 · Needs PowerScripts 3.8.42 or later
Open the PowerScripts panel (Window > Extensions > PowerScripts) and choose PDF MultiPage Import from the Tools scripts. You don't need a document open.
A new document opens with one artboard per page, laid out in a grid row by row.
3 and Page End to 6.