A detection name that uses the format "trojan.script.[variant]" is a Generic Detection that identifies script files with trojan-like characteristics or behavior.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More information on scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
Malicious scripts are usually (but not always) detected as trojans. Examples of malicious scripts include: