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".
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.