This threat is a detection for a Java component associated with the exploit kit called SweetOrange. Similar to any other exploit kit, such as Blacole, it first determines information about your browser. This includes the browser you use (for example, Internet Explorer or Mozilla Firefox), its version, and what plug-ins are installed.
SweetOrange can exploit vulnerabilities in Java, specifically the vulnerability discussed in CVE-2013-0422.
It usually comes bundled with another file detected as Exploit:Java/CVE-2013-0422.
Analysis by Methusela Cebrian Ferrer
Alerts from your security software may be the only symptom.