My company's blog was hacked, with a link farm added to the footer. This appears to be a hack to the theme files, as it is code that I can see if I edit my footer.php file. Deleting the links just causes them to re-appear in a day or so though.
I've tried a few things to remove the hack, to no avail. I'm at the point where I believe my only option is to re-install WordPress (keeping the database).
It just bothers me that I don't know where the link farm code is coming from though. I don't want to miss something, as I've never been able to find the code which generates the links.
Can anybody suggest somewhere to look that I may not have tried?
Here's a link to the site, if that helps: