Troj/Agent-JKA is a Trojan for the Windows platform.
When run Troj/Agent-JKA copies itself to <Windows>\adobereader.exe and sets the following registry entries:
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install\Software\Microsoft\Windows\CurrentVersion\Run
adobereader
adobereader.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
adobereader
adobereader.exe
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
<path to Trojan executable>
<path to Trojan executable>:*:Enabled:adobereader