Right-click the document, and choose Document Properties.
You can copy content from a PDF unless the author has applied security settings that disallow copying. If you want to copy large content from a PDF, you can easily export the PDF to Word, Excel, or PowerPoint.
Copy text and images from PDFs
Confirm that content copying is allowed
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Click the Security tab, and review the Document Restrictions Summary. 
Copy specific content from a PDF
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Right-click the document, and choose Select Tool from the pop-up menu. 
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Drag to select text, or click to select an image. 
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Right-click the selected item, and choose Copy. 
Copy an entire PDF (Windows® Acrobat Reader application only, not browser)
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Choose Edit > Copy File to Clipboard. 
Copy an area of a PDF (Acrobat Reader application only, not browser)
The Snapshot tool copies an area as an image that you can paste into other applications.
In another application, choose Edit > Paste to paste the copied image.