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Aliases: Cool Exploit Kit (other) Exploit.JS.Pdfka.ggz (Kaspersky) Cooexp.A (Norman) EXP/JS.Expack.CO (Avira) JS/Exploit-Blacole.gq (McAfee) Mal/ExpJS-AN (Sophos)
Exploit:JS/Coolex.A is script contained within an exploit pack known as the "Cool Exploit Kit". It can install arbitrary malware on your computer, including variants from the Trojan:Win32/Reveton family of ransomware trojans that may lock your computer and demand payment of a supposed fine.
For more information on ransomware, please see our FAQs at http://www.microsoft.com/security/portal/Shared/Ransomware.aspx.