Android/PUP.Riskware.Armor is Malwarebytes’ detection name for a fake Anti-Virus for Android called Android’s Antivirus.
Type and source of infection
Fake AV’s can give the users a false sense of security which may end up causing more serious problems.
Because of the elevated permissions needed manual removal is not easy. That is where Malwarebytes for Android can help by identifying this app and removing it.