PDF to Google Sheets Entry

I have a collection of PDF files that contain text-only tables. The information in each table needs to be lifted out and placed into a single Google Sheet. While every table is neatly laid out, the column headers are not uniform from file to file, so part of the task will be to match each header to the correct column in the master sheet or create new columns when something unique appears.

You will receive:
• A folder of the source PDFs
• A blank Google Sheet with a few example rows showing how I want the final structure to look

Your deliverable is the completed Google Sheet, fully populated and double-checked for accuracy. Please keep the existing formatting of the sheet, ensure no text is truncated, and flag any rows where a header could not be confidently matched.