View file Ad4fun.com/serve/b.php
<?php
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Cache-Control: no-store, no-cache, must-revalidate, private, post-check=0, pre-check=0', FALSE);
header('Pragma: no-cache');
header("Content-Type: image/png");
readfile("b.png");
?>