Conditional Hack On Website

Hi there,

I am trying to fix one of my websites which has been hacked with the Pharma hack. I found the web.config and .htaccess files had been compromised and changed them. However, the problem is still there. I also deleted files ascociated with the hack off my server. But the problem is still there. Can anyone recommend anything else I should be trying? I know my version of wordpress is a little older but my server wont allow me to go higher for now until I pay more. Is there anyway I can check what php file is being called?
The website works fine if you just go to it but redirects when seen on google. Any ideas?

The page I need help with: [log in to see the link]