Deleting Attached File
Files attached to PDFs can easily be deleted so that they are no longer 
 a part of the PDF. Depending on how the file is attached use one of the 
 two methods below to delete attached files.
Embedded Files
	- If the file is attached as an embedded file, go to the attachments 
	 tab where the list of attached files is displayed, right-click (Mac: 
	 Ctrl+Click) on the attached file and choose the option Delete.
 
Files Attached as Comment
	- If the file is attached as a comment, select the file attachment 
	 comment on the page and click delete. You can also right-click (Mac: 
	 Ctrl+Click) on the file attachment comment and choose Delete.  You 
	 can also delete the file from the attachments tab as you would embedded 
	 files.