Hark is a simple Word Macro virus. Infected documents have macros
called "AutoOpen" and "Harkone".
This virus has an interesting activation routine. On 1st of June the
virus maximizes all active windows, changes the font size to 60 and
insert the test "HARKONE" and "NJ [SLAM]".
SLAM is a name of a virus-writing group.
[Katrin Tocheva, F-Secure]