Rename PDF based on Content — Help!

Hi There,
I would like to use Hazel to rename some PDF files with the first line of text within the individual PDF files.
I cannot for the life of me figure out how to do this.
Can someone please point me in the right direction?
Thanks so much!
I would like to use Hazel to rename some PDF files with the first line of text within the individual PDF files.
I cannot for the life of me figure out how to do this.
Can someone please point me in the right direction?
Thanks so much!