unknown_html flagged by avast! Webshield!

Viruses and worms
1

Lot of banner malcode now alerted by avast! Webshield.

See: https://www.virustotal.com/nl/url/8cc4ab9a312938b4daa270fc7ef05954cb4ee2c6c06c8ae8655cf597db1ed774/analysis/1406185438/
2 to detect.
Missed: http://killmalware.com/25118.dresses-onlineoutlet.com/ & http://sitecheck.sucuri.net/results/25118.dresses-onlineoutlet.com/
Issues: Server redirect: Code: 503, Content cannot be read!
Google browser difference: Not identical

Google: 302 bytes Firefox: 15952 bytes
Diff: 15650 bytes

First difference:

...

I get a bad gateway alert here: https://asafaweb.com/Scan?Url=dresses-onlineoutlet.com
and Custom errors fail and warnings here: https://asafaweb.com/Scan?Url=http://25118.dresses-onlineoutlet.com/
Excessive header warning:
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET, PHP/5.2.17
X-AspNet-Version: 1.1.4322

See: http://fetch.scritch.org/%2Bfetch/?url=http%3A%2F%2F25118.dresses-onlineoutlet.com%2F&useragent=Fetch+useragent&accept_encoding=

avast! Webshield alerts: htxp://25118.dresses-onlineoutlet.com/style/default/images/banner.jpg as URL:Mal.

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