Direct Access Archive, or DAA, is a proprietary file format developed by
PowerISO Computing for disk image files which supports advanced features such as compression,
password protection, and splitting to multiple volumes.
(from Wikipedia)
Sample hexdump
Here's a sample hexdump of a .DAA file's header (first 256 bytes):
Marked in yellow are the patterns used by
TrID to identify a .DAA file.
Check the MiniDumper tool to obtain an hexdump from a file in an easy way!