There’s no easy way I know of but having had to do that with a PDF report of lots of data (12 Pages), I had to select all tabular data on each page, copy it and paste into a text file. I then removed all commas before doing a find and replace on spaces and replacing them with commas. Finally I saved the file as a csv file and imported it into my spreadsheet. Even after all of that I spent a fair amount time aligning the data into proper columns. The previous assumes that PDF is text-based. If it’s image-based you need to OCR it first before doing what wrote. Then is it essential to carefully proofread everything to make sure the OCR didn’t screw up some numbers.
How do you convert PDF to Text-Only? There are software programs that can create tabular PDF files. I bought these tools and they worked great. If you have purchased other software it would go without saying that I would thoroughly verify that it reads your tabular file. I would also make sure to turn online breaks in your PDF document as well as adding the word “PDF” in front of your tabular document. It is possible to download the PDF file to your computer, open it up and convert it to table format by itself. If you prefer a little more work you could use the free application Adobe Acrobat Reader to convert it. The best part was that, even though it was a PDF document, it would automatically display it in a tabular format so that I was only required to do some simple formatting such as lines, page.