This indicates an attack attempt to exploit a Code Execution vulnerability in Microsoft Office.
This issue is caused by an error in Microsoft Office when handling a malformed Graphic Object. It may allow remote attackers to execute arbitrary code by sending a crafted Office file.
Microsoft Office XP Service Pack 3
Microsoft Office 2003 Service Pack 3
Microsoft Office 2007 Service Pack 2
Microsoft Office 2004 for Mac
Microsoft Office 2008 for Mac
Open XML File Format Converter for Mac
System Compromise: Remote attackers can gain control of vulnerable systems.
Refer to the vendor's web site for suggested workaround.