What is out here? Why site is flagged? Abuse-Network-Nightmare?

Viruses and worms
1

See: https://www.virustotal.com/en/url/3cae739b88ff16e723ac471f938b1cdaf8634bb0a77b160af4bde21f2882c842/analysis/1417266919/
Outdated server software: http://sitecheck.sucuri.net/results/zhongren-r.cn#sitecheck-details
IP abuse reported here: https://www.firyx.com/whois?ip=63.141.229.20
Listed as suspicious by Google Safe-browsing:
Server/redirect status 503
Google Browser Difference: Not identical

Google: 257 bytes Firefox: 21014 bytes
Diff: 20757 bytes

First difference:

... Listed here: http://networknightmare.net/DDoS/Scripts/iptables.limit.ddos.txt | http-robots.txt: 2 disallowed entries IP PTR: Resolution failed |_/play-* /money/* |_http-title: \xE5\x8F\x8B\xE6\x83\x85\xE6\x8F\x90\xE9\x86\x92 UTF-8

Name servers did not respond: http://www.dnsinspect.com/zhongren-r.cn/1417267941
warning: Name servers software versions are exposed.

MyWOT negative: https://www.robtex.com/en/advisory/ip/63/141/229/20/

Remarks: dynamically-assigned reverse DNS entries; Hosts found sending virus mails ; Hosts found sending phishing mails ;
Hosts found sending mail contaning spam images; Hosts are added by our bots as users connect with hacked boxes and open proxies;
Lists 's that sent more than 2 virus in the last 24 hours; Direct UBE sources, verified spam services and ROKSO spammers;
llegal 3rd party exploits, including proxies, worms and trojan exploits.

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