Site being blocked. False positive?

Hello, the owners of the site centraldebailes.com.br are saying by email to me that avast! is incorrectly detecting the site for more than 30 days.
Can the virus lab point to the exactly problem? Thanks.

Already reported here: http://www.avast.com/contact-form.php

probably a IP block

see here. http://urlquery.net/report.php?id=6270405 scroll down to recent reports on same IP

there you will find this (and others) using same IP. http://urlquery.net/report.php?id=5492608

Hello, this site is infected with HideMe-J.
there is javascript starting with “function dnnViewState…” and ending with “dnnViewState();” that needs to be removed.

Hello,

Avast complains about using certain extensions (such as “sharethis”), which use bad practice (hidden links). Either disable them, or delete the code that hides the links (function dnnViewState() { var a=0,m,v,t,z,x=new Array(‘9091968376’…) More info can be found here: http://forum.joomla.org/viewtopic.php?t=795946

Best regards,
Valerij Medviď
Virus analyst

Sucuri say SPAM infection http://sitecheck.sucuri.net/results/centraldebailes.com.br

VirusTotal
https://www.virustotal.com/nb/file/d3e35559833b2e4dbbadee94a02dbd522b840606e2408e37f4d9a70628112447/analysis/1380815354/

Lots of malware on same IP sites now dead or been closed: http://support.clean-mx.de/clean-mx/viruses.php?review=69.49.115.33&sort=id%20desc
See the safe virus viewer report: http://support.clean-mx.de/clean-mx/view_virusescontent.php?url=http%3A%2F%2Fshsrepresentacoes.com.br%2Fsuperpromocao%2Fcopa2014%2Fcopa%252Cfuleco.dll%2FBR.FIFA%253D2%252C0%252C1%252C4%2Ff%2526ulec0%2526id%2Fsele%252Cca.o%2526id%253Dbr%2Fhome.html
Site infested with Joomla malware: avast detects as JS:Clickjack-B[Trj]. There also could be a FP detection in mod_AutsonSlideShow/tmpl/default.php", anyway it seems Joomla needs updating there and templates used should be checked!
(info credits go to adje on the Dutch Joomla Community forum) - Well that particular issue should be re-checked by the av malcode analysts,

polonus