SoftwareCode.ru + WordPress + Chrome = Malware Warning

For some inexplicable reason, my blog is producing malware errors in Google Chrome, saying that my site contains code from softwarecode.ru:

The problem occurs:

• Only in Chrome – Firefox and IE are fine.
• Only on single posts, not the home page, categories, or pages (that I’ve seen).
• Intermittently – fairly consistently on certain posts, but then not on others

So far, to troubleshoot it, I have:

• Made sure WordPress, all plugins and my theme are up-to-date.
• Tried deactivating all plugins
• Reinstalled WordPress

Google doesn’t seem to have much on the softwarecode.ru domain, so this must be a new and fairly unique problem. I figured I’d be finding all kinds of things about it, but whatever the problem is, I seem to Patient Zero, or darn near it.

Any ideas would be helpful.

UPDATE: I got on with GoDaddy support and we restored my files to last week… seemed to fix the problem. Meanwhile, I’ve installed a couple of security plug-ins. Hopefully the database isn’t infected. That would be a royal pain.