Traffic to external link – can't find the link on website

I am not able to locate an external link on my website that was obviously hacked in to the site. I have searched all links on my site but cannot find the link coded in anywhere and need to strip it out.

The website is intellalegal.com.

The external link, which shows up on the main upper menu to the right is to: online instalment loans
https://www.jupiterolympus.com/dev/online-instalment-loans/

I tried every possible tools to find out what page on my site has that link but failed to get the information.

I have also read through the suggested posts but have not wanted to do a full reinstall of the site and contents.

Please suggest me what can I do to find out what page of my website has that external link.

Thanks for any constructive replies.