Microsoft has brought in the ability to Edit a PDF directly from Word.
Select the File Menu then select Open
Word tells you that it’s going to make a copy of the PDF and convert its contents into a format that Word can display. The original PDF won’t be changed at all. Select OK.
After your edits, you save it as a Word doc or a PDF. In the Save menu, choose which in the Save as dropdown menu and select OK.
Index Page: MS Word Essentials