protected void ManipulatePdf(String dest)
{
PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(dest));
Document doc = new Document(pdfDoc);
PdfPage firstPage = pdfDoc.GetFirstPage();
PdfCanvas canvas = new PdfCanvas(firstPage);
canvas
.MoveTo(36, 700)
.LineTo(72, 760)
.LineTo(144, 720)
.LineTo(72, 730)
.ClosePathStroke();
Rectangle linkLocation = new Rectangle(36, 700, 144, 760);
// Make the link destination page fit to the display
PdfExplicitDestination destination = PdfExplicitDestination.CreateFit(firstPage);
PdfLinkAnnotation linkAnnotation = new PdfLinkAnnotation(linkLocation)
// Set highlighting type which is enabled after a click on the annotation
.SetHighlightMode(PdfAnnotation.HIGHLIGHT_INVERT)
// Create a link to the first page of the document.
.SetAction(PdfAction.CreateGoTo(destination));
PdfArray arrayOfQuadPoints = new PdfArray(new int[] { 72, 730, 144, 720, 72, 760, 36, 700 });
linkAnnotation.Put(PdfName.QuadPoints, arrayOfQuadPoints);
firstPage.AddAnnotation(linkAnnotation);
doc.Close();
}