Avast is Blocking our Website. Please Help

Avast is Blocking our website for last couple of days. The website is http://www.biggoldapple.com/ . The alert consider this as Malicious URL.

We have checked the website at : http://sitecheck.sucuri.net/results/biggoldapple.com/ and this shows the clean report for the website. It only states about the outdated software (Magento). Is this the reason ?

Please help us.

Site is being flagged here: http://urlquery.net/report.php?id=238050
→ Microsoft Rich Text File Invalid List ID
IP assocviated with mdl_Blackhole exploit kit 2.0
script source with bad web rep: http://js.users.51.la/14649567.js

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