Adobe Acrobat can be used to edit PDF files.
You can edit a document with Acrobat DC .
You can refer this link for FAQ on acrobat DC : Answers to some of the most frequently asked questions about Acrobat DC.
Also you can download 30 days trial version of acrobat DC from here : Download Adobe Acrobat free trial | Acrobat Pro DC
Let us know if you need any further help.