Sometimes you may want to extract certain pages of a PDF file and save those pages as a separate PDF file.
This is easy to do with Adobe Acrobat. Open the PDF file in Acrobat and choose Document → Extract Pages. In the Extract Pages dialog, choose the pages you wish to extract and press OK. A new instance of Acrobat opens with the pages you specified. Choose File → Save to save these pages as a new PDF File.
Tried with: Adobe Acrobat 8