SecurityWeek – (International) Trend Micro reveals top document attack vectors from April. Trend Micro researchers recently revealed just how prevalent the use of certain document types is among attackers. By far, the two most popular document formats for hackers targeting Microsoft Office software are Word and Excel files, which were used in a combined 90 percent of attacks on Microsoft Office in April. The biggest reason for this is that the two most reliable exploits used by hackers targeted CVE-2010-3333 and CVE-2012-0158, which are both Word vulnerabilities.
Source: http://www.securityweek.com/trend-micro-reveals-top-document-attack-vectors-april