How do i crop Photos/Faces from PDF Forms in Bulk?

I have a large-scale project where I need to process thousands of filled-out PDF application forms. Each PDF contains a passport-sized headshot/photo of the applicant placed in a designated section.

I need to bulk extract these photos and crop them tightly around the faces so I can save them as individual image files (named after the applicant's ID or PDF filename). Doing this manually one by one is out of the question due to the volume.

Has anyone dealt with this workflow before? I am looking for recommendations on the best approach, tool to handle this.