It’s not news that PDF files can contain viruses. As useful as PDF files are the flaw is with the reader program, called Adobe Reader (previously called Adobe Acrobat Reader).
It’s possible to embed code in PDF files and it’s been shown that this code can download malicious programs from the internet and install them on the computer. At the moment the latest malicious code comes from Netherlands, and as with all things on the internet it can move or spread quickly.
If you have one of the following programs then you’re at risk. According to Adobe’s notice it affects all platforms (Windows, Mac, etc).
- Adobe Reader 8.1.1 and earlier versions
- Adobe Acrobat Professional 8.1.1 and earlier versions
- Adobe Acrobat 3D 8.1.1 and earlier versions
- Adobe Acrobat Standard 8.1.1 and earlier versions
The vulnerability has been fixed in version 8.1.2 so update all your computers to avoid this one. Antivirus software can also protect you if you keep it up to date and use a well established product.