Adobe Acrobat allows you to view, create and make basic edits to documents using Adobe Systems' Portable Document Format (PDF). To help verify the identity of document signers and ensure that form information has not been altered since the signer sent the file, Acrobat includes an implementation of Adobe's Digital Signature technology. As long as you are the originator of a document's digital signature, and can open the file using the computer on which the document was signed, you can clear a signature in Acrobat with just a few clicks.
Click "File" in the top menu bar, and select "Open." Locate in the resulting file window the document containing the digital signature you want to remove, and then select the document by double-clicking its icon.
Navigate to the page containing the signature you want to delete.
Right-click the field containing the signature, and select "Clear Signature." If you use Acrobat on Mac OS X, control-click the field and select "Clear Signature."
You cannot remove signatures placed by someone else.