Pastika is a polymorphic file virus. While spreading, it infects the
system with the Jindra boot virus.
Pastika activates on 21st and 22nd of every month. At this time it
overwrites the beginning of the hard drive. While overwriting, it
constantly displays this line:
Jindra & Pastika je zde!!!
This is Czech and means "Jindra and Pastika are here".