Open PDF files directly from SharePoint
You can open PDF files directly from your SharePoint document library using Acrobat X Pro. Acrobat also gives you the option of checking out a file to prevent others from working in it if desired.
Adobe® Acrobat® X Pro software lets you collaborate better with team members through Microsoft SharePoint integration in Windows®. Access SharePoint from any Acrobat Open or Save dialog box, open PDF files from SharePoint, and easily check PDF files in and out.