Website false postive?

All site on my one server has been blocked by avast. But the warning messages show favicon.ico and some image file infect by URL:Mal. But some of the sites does not have favicon.ico. And I checked all these sites do not contain any suspect link or file. I have no idea why avast block those sites on the same server. And I checked all sites by http://www.urlvoid.com/. All passed. Add Avair also don’t block these site. Can anyone tell me why those sites blocked by avast? Does the ip block by avast?
wxw.maplebook.com.tw
wxw.outdoorbuy.com.tw
wxw.bridalworld.com.tw
wxw.hair101.net
wxw.bridalworld.com.tw
wxw.nyuptown.com.tw
wxw.ping-pong.tw
wxw.psy.com.tw
wxw.shang-renpub.com.tw
wxw.unodeco.com.tw
wxw.hausound.com.tw
wxw.photoking.com.tw
wxw.primebio.com.tw
wxw.buddhajnana.org
wxw.ccfss.org.tw
wxw.donut.com.tw
wxw.fireflybooks.com.tw
wxw.customfit.com.tw

hey and welcome to the forum. according to zulu and one of the url its suspended.

http://zulu.zscaler.com/submission/show/2927d09f200b483ef1176ca93130469c-1372413043

But the warning messages show favicon.ico and some image file infect by URL:Mal.
URL:mal means it is on a block list for whatever reason..... does not have to be infected

check your IP against block list here. http://whatismyipaddress.com/blacklist-check
also check here. www.urlquery.net

You can report a possible FP here: http://www.avast.com/contact-form.php
you may add a link to this topic in case they reply here

Hello,
it will be unblocked in next stream update.

Milos