var doc = PDFViewCtrl.GetDoc();
// Create a hyperlink...
Page first_page = doc.GetPage(1);
Link hyperlink = Link.Create(doc.GetSDFDoc(), new Rect(85, 570, 503, 524), pdftron.PDF.Action.CreateURI(doc.GetSDFDoc(), "http://www.pdftron.com"));
first_page.AnnotPushBack(hyperlink);
hyperlink.RefreshAppearance();
// Create an intra-document link / GoTo
pdftron.PDF.Action goto_page_3 = pdftron.PDF.Action.CreateGoto(Destination.CreateFitH(doc.GetPage(3), 0));
Link link = Link.Create(doc.GetSDFDoc(), new Rect(85, 458, 503, 502), goto_page_3);
link.SetColor(new ColorPt(0, 0, 1));
// Add the new annotation to the first page
first_page.AnnotPushBack(link);
link.RefreshAppearance();
PDFViewCtrl.Update();
Please let me know if it helps you