Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More scanning & removal options
More information on the 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.
Obfuscated script is usually found in exploits embedded in malicious HTML and PDf files, which are commonly found in the wild; such files may have damaging payloads, such as downloading additional malicious files and executing it.