Mediafire downloads tab redirects to aliexpress.com and other sites after download starts?

Ok, so I previously had no problems with Mediafire until now. I've been downloading mods and their accompanying texture pack addons for Minecraft and have recently ran into a problem. Just after the download starts in my browser (Google Chrome) usually the browser opens up a new tab to aliexpress.com or another clearly adware site. I have scanned numerous times with numerous utilities and cleaned my cache and temporary internet files many times but it still keeps happening. I've reset my Chrome twice now, found my LAN and proxy settings to be unchanged, and found that there's no additional extension in the extensions area of the settings. I tried using CCleaner, Malwarebytes Anti-Malware, AVG (all three are currently on my computer), Kaspersky's TDSS (Rootkit) killer, ADW Cleaner, and a few others and this is driving me nuts. I'm no computer novice so I know what I'm doing, but I've done everything I could think of to try to get it to stop. Unless Mediafire naturally redirects and opens a new tab after the download has commenced, then I don't know what is wrong. Any help would be appreciated, thanks.