Creating links in PDF files requires a proper PDF editor.
Preview
How can I check whether QuickLook should provide previews of various types of documents?
What has broken when Preview no longer opens PDF documents? The answer is more complex than it might appear.
Why does mdls not give full image metadata?
I am assembling an opera using Pages and Finale, into a PDF in Preview. Sometimes pages are replaced with blanks. How can I get this to work?
The Eclectic Light Company 