27C3 - Version 1.6.3
27th Chaos Communication Congress
We come in peace
| Speakers | |
|---|---|
|
Julia Wolf |
| Schedule | |
|---|---|
| Day | Day 4 - 2010-12-30 |
| Room | Saal 1 |
| Start time | 11:30 |
| Duration | 01:00 |
| Info | |
| ID | 4221 |
| Event type | Lecture |
| Track | Hacking |
| Language used for presentation | English |
| Feedback | |
|---|---|
|
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OMG WTF PDF
What you didn't know about Acrobat
Ambiguities in the PDF specification means that no two PDF parsers will see a file in the same way. This leads to many opportunities for exploit obfuscation.
PDFs are currently the greatest vector for drive-by (malware installing) attacks and targeted attacks on business and government. A/V technology is extraordinarily poor at detecting these. The PDF format itself is so diverse and vague, that an A/V would need to be 100% bug-compatible with the parser in the vulnerable PDF reader.
You can also do cool tricks like make a single PDF file that displays completely differently in several different readers.