File this under a new feature I didn’t know existed… you can now edit PDFs in Word 2013!
The converted document might not look exactly the same (formatting might be off by a little bit, or a lot) depending on how much image elements are in the document, and it obviously works a great deal better with documents that are mostly text. However, I opened a document that had been a Word document saved as a PDF, and it was completely perfect, so your mileage may vary.
Once you’re done editing your document, you can use Word to export it back to PDF, by simply clicking on File, Export, then Create PDF/XPS, like so:
Don’t have the latest version of Word? Office 365 has several options that include the latest version of Office, and it will always be current and up to date, which means that you get new features like this one when they come available!