A-PDF Watermark allows you to set a hyperlink for the watermark while adding watermark to the PDF file. See more at: http://a-pdf.com/faq/can-i-set-a-hyperlink-for-the-watermark-by-using-a-pdf-watermark.htm

2. I used your A-PDF Watermark to add text watermarks
and image watermarks to my PDF files, I wonder if this
software provides me with an option to add a
hyperlink for the watermark that link to my website. If
possible, can you tell me how to do this?

3. Yes, you can use A-PDF Watermark to set a hyperlink
for the watermark while adding watermark to the PDF
file. In addition to enabling you to add a hyperlink to
link to your website, this PDF watermark stamper also
lets you to add page link for the watermark. Below I
will show you how to set a hyperlink for the watermark.

4. After you start A-PDF Watermark, click "Add PDF document" or "Add
directories to list" to add PDF files.

5. In the watermark list, select one or more watermarks. And you can add
new watermarks by clicking the "Cross" button and then select a type.

6. Double click the selected watermark and you will see the pop-up Edit
Watermark window. Click the "Links" tab and check "Apply Link", then
you can input a web link URL. Click "OK" to save the settings.

7. Click the inverted triangle and select a type to save the watermarked PDF
files.