Extract data from PDFs
I suggest to first parse the pdfs to raw text and then retrieve the information in the next step. I assume you use Python.

As commented, you can use PyPDF2 to obtain the raw text and the number of pages of the documents. Alternatively you can use cloud services such as AWS Textract to parse multiple pdfs to raw text. 

You may then apply regular expressions, for example re.findall() with specific matching patterns to the parsed pdf documents to match the terms you seek to find.