This is a simple Word macro virus.
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.
While spreading, Footer.A creates these two files:
The virus activates by overwriting the footer area in opened documents.
W97M/Footer was found in the wild in February 1999.
This is a minor variant of Footer.A that is functionally identical with it.