Virus found on Avast website?

Infection Details
URL: http://static.avast.com/web/j/s_code.js
Process: C:\Program Files\Mozilla Firefox\firefox…
Infection: JS:ScriptPE-inf [Trj]

This is what popped up when I clicked the link for free protection for schools link. (listen up, protect your school for free now.)
at this URL: http://www.avast.com/en-us/education?utm_expid=22755838-7&utm_referrer=http%3A%2F%2Fwww.avast.com%2Fen-us%2Flp-fr-virus-alert%3Fp_ext%3D%26utm_campaign%3DVirus_alert%26utm_source%3Dprg_fav_80_0%26utm_medium%3Dprg_systray%26utm_content%3D.%252Ffa%252Fen-us%252Fvirus-alert-default%26p_vir%3DURL%3AMal2%26p_prc%3DC%3A\Program%2520Files\Comodo\Dragon\dragon.exe%26p_obj%3Dhttp%3A%2F%2Fplenty8.info%2Flps%2Fflvupdate.php%3Fcampaignid%3D4854812%2526czid%3DYXZhenU0ODU0ODEyMQ%3D%3D%2526subid%3Dnym1COjGr6y9oo75RxACGIz9isS03e6kNCIMMjE2LjQuMTA0LjE5KAE.%2526pubid%3D%2526lang%3Den%2526at%3D0%26p_var%3D.%252Ffa%252Fen-us%252Fvirus-alert-default%26p_pro%3D0%26p_vep%3D8%26p_ves%3D0%26p_lqa%3D0%26p_lsu%3D24%26p_lst%3D0%26p_lex%3D365%26p_lng%3Den%26p_lid%3Den-us%26p_elm%3D7%26p_vbd%3D1489