How can I autoremove submissions that put a URL link in the title?

So I've got some weird spam with people posting a legitimate link, but then doing things like putting URLs as part of the headline to who knows where.

Like this:

http://imgur.com/ClWpNYK.png

I'd like the automod to automatically remove URLs, but it seems to choke on the mere mention of 'http' in a headline.

Anyone have an idea? Thanks in advance.