I tried to access site today from my Russian Samsung A5 Dual Sim ... was blocked by same spam message what others said, telling me my phone was infected and must press button to clean virus. Virus message came from same .pw domain as others have showed on screen shots. I enabled mcafee anti-virus what came with phone and enabled knox too. It was not helpful to solve problem, but advised no virus in my phone.
Problem does not exist from my HP Spectre laptop.