Currently, we don’t have support to add linked text or
annotation in the PDF Viewer. However, we have already logged feedback for the
request, and it will be implemented in any of our upcoming volume releases.
We can’t provide an exact timeline for the feature to be
implemented. Kindly find the feedback below to track the status of the feature.
Feedback: Add
PdfFileLinkAnnotation in the PDF Viewer control | Feature Feedback