Hi Eli, I have some site was affected but redirect malware. The malware redirect only when you click some internal link, or you click 5 times on the page.
Any type of scanner find treath.
There is lots of malware that has this affect and it can come in many different forms. In many cases the source code for the malware is removed but the symptoms persist because the malicious scripts were cached.
If you have deleted all cache files, and disabled caching at all levels (browser, server, plugins, and browser), and you are still having this issue then please email me directly with the site details so that I can take a look.