Malformed PDF Version Header

PDF files may include a malformed version header. A remote attacker may use such a header inside PDF files to evade IPS inspection, in order to avoid detection of attacks against various PDF vulnerabilities...

PDF Containing Encrypted Data

PDF files may include encrypted data. A remote attacker may use such encrypted data inside PDF files to hide attacks against various PDF vulnerabilities, in order to evade IPS inspection. There are cases in which certain traffic, although not intended for malicious use, is very unsafe, since it m...