Adware Safe Finder removal

I recently removed "Advanced Mac Cleaner" malware, and I think that was successful. However, when I use Safari, I have this "Safe Finder" showing up in my browser. It seems to be slowing me down, and I cannot seem to remove it. In support, I found directions to install the latest El Capitan version, and did that. I have restarted, but still have this "Safe Finder" stuff which I do not want. I'd like help removing it, and finding out what else might have infected my Macbook Pro. Thanks!