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.

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.