Find the location of the LZMA compressed tar:
LANG=C grep -abom1 ]$'\000\000'....$'\377\377\377\377\377\377' AdobeAIRInstaller.bin
6704:]�������
Add 1 to this value (e.g. 6705).
Extract the contents of this tar:
tail -c+6705 AdobeAIRInstaller.bin | xz -qqd | tar -xf- --xform='s,^./build,Adobe_AIR_Files,'