Lucky-users.com is a browser extension that comes bundled with other free applications and programs without the user's consent. This program is not a virus, but it is necessary as a potentially unwanted programs.
Web-alrt-phsng-atck.xyz is a program that is installed on your PC in the form of an extension to the browser Google Chrome, Mozilla Firefox and Internet Explorer. Web-alrt-phsng-atck.xyz hijacks your browser and displays advertising banners, displays false coupons and promotional links to sites that cooperate with the developers of the program.