To change a link:
Choose View > Sidebar.
Choose Annotations from the pop-up menu at the bottom of the sidebar, and then select Include Links.
Select the link.
Choose Tools > Inspector, and then click Annotation.
To link to a website, choose URL from the Action pop-up menu, and enter the full website address in the URL field.
To create a link to another page in your PDF document, choose “Link within PDF” from the Action pop-up menu, go to the page you want to link to, and then click Set Destination.