Naiva.A is a macro Trojan that passes itself off as a Word document containing information about the bird flu epidemic. Once opened, Naiva.A drops the Trojan detected as Ranky.FY. It can also handle files, deleting, modifying or creating them.
Naiva.A does not infect other Word documents, its main function is to bear a copy of Trj/Ranky.FY, in order to drop it on the affected computer.
Naiva.A does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, email messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.