The Type designation 'Joke' was previously used by F-Secure to identify a non-destructive program with an annoying or funny functionality.
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 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.
Joke programs are not actually viruses, but joke programs that create virus-like symptoms. They do not spread or cause damage. F-Secure products detect joke programs because their behavior often causes the user to suspect a virus infection.
With changes in the threat landscape today, programs previously identified as 'Joke' are now classified under the Riskware Category, with the Type designation 'Application'.
The update in naming better clarifies the program's overall security profile in the current, more complex threat landscape.