This is not a virus or any other kind of malware.
Some people have been wondering about mysterious entries appearing to their datebook to date 25 December 2030. The entries having title Santa and attached note containing a number (usually 0).
The Santa entries are an Easter egg (a hidden functionality) in wordsmith program versions 1.0c or older. For some reason the programmer thought it would be fun to put mysterious entries into the datebook.
This behaviour is harmless and shouldn't cause any problems. Blue Nomad has removed the Easter egg in the word smith version 1.0d.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More scanning & removal options
More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
Technical Details:Jarno Niemela F-Secure, January 2001