A newly discovered Cryptoming campaign called Drive-by Cryptomining targeted million of Android user to mine Monerocoins and this campaign Started around November 2017 using different type of malicious domain. Researchers analyzing the code behind of this operation revealed that, it redirects to google page and make users believe that they are not a bot. Its possible that this particular campaign is going after low quality trafficbut not necessarily botsand rather than serving typical ads, they chose to make a profit using a browser-based Monero miner.”]
Source: https://gbhackers.com/android-cryptomining-mine-monero/