Webshell backdoor detection?

See: https://www.virustotal.com/nl/url/b5999d13b5510d87149d6bbf5c184bd145df1b14ff14ad73215822cf3a8179dd/analysis/1407184353/
Detected by Cybercrime Tracker as backdoor.
Sucuri does not flag: http://sitecheck.sucuri.net/results/www.aycz.net
BitDefender TrafficLight flags as malicious.
IP badness history: https://www.virustotal.com/nl/ip-address/117.27.139.110/information/
Here it is found up as malicious: http://urlquery.net/report.php?id=1407184679292
Virustracker classification: wXw.aycz.net,117.27.139.110,Criminals,
Should be blockerd.
When in China, time for an asafaweb scan resulting in three warnings: https://asafaweb.com/Scan?Url=www.aycz.net%2FHelp.asp
Excessive Headers, HTTP only cookies and Clickjacking Warning.
See also: http://fetch.scritch.org/%2Bfetch/?url=http%3A%2F%2Fwww.aycz.net%2FHelp.asp&useragent=Fetch+useragent&accept_encoding=
And again it were the excternal links to js.users.51. dot a that were flagged!

polonus

https://www.virustotal.com/en/file/1930ddeb8f265541d060a01390ee49777801df66e49d282529507487b51349cc/analysis/1407200502/

Read about this threat here: http://www.antivirushelptool.com/viruses/Unclassified%20virus/avht88470/XPFox-2
& http://support.clean-mx.com/clean-mx/md5.php?ClamAV=ASP.XPFox-2

polonus