PDF_JPX_NO_SOC — JPEG2000 codestream missing SOC start marker

high PDF_JPX_NO_SOC

What it means

jp2c codestream box does not begin with the required Start Of Codestream (FF 4F) marker.

Why it fires

Renderers that tolerate the missing marker and those that abort see different content. Some implementations search forward for the next FF xx marker, which lets attacker-supplied bytes between the box header and the SOC be treated as codestream content.

Other PDF heuristics

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