Obscene anchor text linking to non-existent pages on my site

[MartinDS]

My website seems to be rapidly accumulating links from what seem to be reputable websites and which are going to non-existent pages on my website. The anchor text of many of these links is obscene.  Here is the URL of one of the pages that is linking to me. I contacted the originating site a couple of weeks ago and they are looking into it but I've not heard back. I'm guessing the originating sites have been hacked. Should I be concerned? Why are they linking to pages on my site that don't exist?

http://www.radicalartistsagency.com/htmlarea/language/0content_abo_utus.html

Looking at the page source of this page reveals the hidden links.

[OlegKorneitchouk]

Looks like some negative SEO. I would disavow the site to be on the safe side and be sure to monitor your backlinks actively.

[MartinDS]

thanks, Oleg.  I'll do that.