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Word 2013 and 2016 will let you convert a PDF to an editable Word document.  Then, you can use word to save the document back as a PDF.  There are some caveats, and it depends on how the PDF was created in the first place, but give it a try.  Check out this Microsoft article for more information
https://support.office.com/en-us/article/Edit-PDF-content-in-Word-b2d1d729-6b79-499a-bcdb-233379c2f63a