If you have access to Microsoft Word 2013 or later, you can simply open .pdf files in it and save the content as standard Word document (.doc, .docx).
Without latest MS Word, you will need to rely on some sort of converter solution, some viable choices are listed below.
Articles and other information relating to pdf into doc conversion:
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How to export and convert text from scanned document to text file - Recovering text from scanned documents and pictures
How to convert PDF file to Microsoft Word document - Creating Microsoft Word documents from PDF source