Import Photos From a PDF
You can import photos from a PDF by opening the document or by Placing it (File > Place). After doing either of these you will get an Import dialog box, click the “images” button to see all the images included in that PDF document.
Select the image you would like to import by clicking on the thumbnail, or select multiple image by holding Ctrl (Mac: Command) as you click on the thumbnails. Click OK when you’re done and Photoshop will open the images as new documents.