I agree with Bart; I do not think that PDF has that feature.

I'm not sure how a "static" PDF document would even be able to support that feature.

How would the PDF document itself "know" that the user was hovering the cursor over the link?

IMO what you are asking for would more likely be a feature of the application you are using to view the PDF, where the application would be doing something if it detected that the cursor was hovering over a location in the PDF document that was a "link". If there were such a thing, I would think it would be controlled by settings in the application itself and not in the PDF.

Just noting that the "right" way to enter an RFE these days is via SDL XPP Ideas.

That allows others to vote and comment on the RFE.

BTW, if you were talking about doing this with a psfmtdrv workflow (versus divpdf) and you can figure out what would be the "PostScript code" (i.e. a form of a pdfmark) needed to define a "button" in the resulting PDF, then you might be able to use the GEN type of :pdfs/:pdfe macros to do it.

That GEN type pretty much lets you spit out whatever PS you want for a pdfmark.

But if you're talking about a divpdf workflow, then it would require an XPP development effort.