Mal/BredoPk-B is a family of Trojans which are typically mass-mailed via spam and have functionality to download and execute malware.
Mal/BredoPk-B typically allows unauthorized remote access to the computer over a network.
Members of the Mal/BredoPk-B family are examples of payloads associated with the Operation Aurora exploit of the zero-day Microsoft Internet Explorer vulnerability (CVE-2010-0249 patched by MS10-002).