avast isn't the only one not to like this site, firefox, safe browsing lists it as an attack site, see image.
If this was detected by the web shield then it should only have given one option, Abort Connection, this drops the infected item so it doesn't get on to your system. Detections have the malware name, file name and location, when that location is an Internet URL then that means that it is the web shield (or network shied) detecting it.
Now what strikes me as strange is how you could get this detection in a boot-time scan when it isn't possible to be browsing ?
Now if it was a network shield detection, it could be blocking an outbound connection attempt, which is even more strange since you say this is in a boot-time scan, when windows isn't running and presumably an internet connection wouldn't be present ?
So this is somewhat of a mystery to me, can you confirm exactly what scan was being done ?
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Please 'modify' your post change the URL from http to hXXp or www to wXw, to break the link and avoid accidental exposure to suspect sites, thanks.