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An Argentinian hacker code-named Zulu has developed a way of infecting PDF
files with a virus. Earlier this month Zulu e-mailed antivirus companies the
first PDF document infected with a virus. The virus is a “proof of concept”,
says April Goostree, virus research manager at McAfee.com. No computer has yet
been infected with the virus. Because the virus only works with the Adobe
Acrobat software that creates PDF files, not the widely distributed Acrobat
Reader, most machines are not at risk. “It’s going to take some effort to get
this thing,” Goostree told New Scientist.