Looks like I have a virus or trojan that is periodically redirecting some of my Google searches to other random pages. Ive done some searching for fixes, and have run virus and malware scans with SecurityCheck, tdsskiller, avast Antirootkit, ComboFix, Malwarebytes, Spyhunter and AVG, and everything has come back clean, but the problem persists.
I changed the DNS on my machine, but I dont remember the login/password for the router and some searches are still redirecting. Ran spybot and the Microsoft malware tool in addition to the stuff listed in the OP, and re-ran TDSS Killer. Everything comes up clean. At this point, I think Ill just wipe it and reinstall the OS. Thanks anyway, guys.