Troj/Clagger-U is a Trojan for the Windows platform.

Troj/Clagger-U attempts to download further malicious code. At the time of writing, none of the files the Trojan attempts to download were available.

Troj/Clagger-U has been seen attached to emails with the following characteristics:

Subject line:
EBAY
eBay AG Rechnung vom 29.06.2006
eBay International AG Rechnung vom 29 Juni 2006
eBay Rechnung
eBay Rechnung vom 29 Juni 2006
eBay Rechnung vom 29.06.2006

Attached file:
Ebay-Rechnung.pdf.zip containing Ebay-Rechnung.pdf.exe

More information can be found at this Sophos page.