Malware on LG G3 redirecting all browsers

More or less two or three weeks ago strange pop ups came up on my PC. Antivirus detected ga.js as virus. I thought it was a false positive. Then I've found that the thing somehow jumped on my phone. Every time I surf the internet, unwanted sites pop up. The thing is equally behaving on all browsers: native g3 browser, Mozilla and Chrome. I've tried almost everything: - Kaspersky free, McAfee security, and Malwarebytes - Delete Chrome cookies, block cookies, delete site data, delete cached data - Reset my router and clear the DNS cache. Nothing. The thing goes undetected, same thing on the PC. Even surfing without the router my phone redirects every time I browse. I'm about to hard reset my phone but this evidently is a malware. So how is it possible that it goes unnoticed? My phone is not rooted and the sites I'm being redirected to are those [reported here](https://android.stackexchange.com/questions/100595/malware-adding-code-to-ga-js-opens-up-random-ads-websites) , amongst others. Anyway, I still don't see a solution to this problem.