Troj/LdPinch-AG is a password-stealing Trojan.
Troj/LdPinch-AG steals details such as system information, usernames, passwords, including details about software including Mirabilis ICQ and Trillian.
Troj/LdPinch-AG stores information gathered in a file PPLUGIN4.DAT which it will periodically attempt to email to a Russian email address.