What claims to be "HD 1080p" is often a cam recording (someone holding a phone in a theater) or a malicious .exe file disguised as a movie.
Additionally, many ISPs in Western countries and parts of Asia now proactively block access to these sites at the network level. The game of whack-a-mole between pirates and authorities shows no sign of ending, but the risks for end-users are increasing. 5starhd Movies.com