Hyperlink in a PDF does not open in a new window

Hello All, I'm new to this group, so pardon me if I did not see this question answered.

I have a PDF created from Excel that we have on our website. It lists items we have in a clearance list.

There is an icon in the PDF that links to an online chat program.

We want to force the link to open in a new window. That way the customer can still see the list of available items.

I've tried a number of modifications to the link, but so far no go.

Any suggestions? I'd like this to be embedded in the PDF.

Thanks in Advance!