Q. How do I edit images that are in a PDF?
Open the PDF file in a full version of Acrobat. Click on Tools at the top right. Tip down Content and choose the Edit Object tool.
Hold down the Control key and click on the Image. Choose Edit Image from the drop down menu.
The image will open in Photoshop for editing and color correcting. When you are finished with the image changes in Photoshop, click Command S to Save, Command W to close, and the edited image will pop back into position in your PDF file.