Trend Micro has uncovered another malware variant targeting vulnerabilities in Adobe Reader.

"The malware, being delivered in malicious PDF email attachments, targets a JavaScript vulnerability in Adobe Reader and Acrobat 9.2 and earlier versions," writes SearchSecurity.com's Robert Westervelt. "It then drops a downloader onto the victim's machine, which attempts to use Internet Explorer to receive commands."

"Other security researchers have warned that the PDF attacks targeting the zero-day vulnerability appear to be using increasingly sophisticated code," Westervelt writes.

Click here to read the SearchSecurity.com article.