PDF differential parser failed

The analyzer cross-checks its in-process byte-level PDF scan against an independent pdfminer.six pass to surface parser-divergence exploit shapes. A pdfminer error here is itself a signal — malformed PDFs (corrupted xref, divergent duplicate objects, broken object streams) often deliberately defeat one parser while remaining renderable in another, which is the basis of several real-world PDF exploitation primitives. The static byte-level heuristics still ran on the file and their findings above are valid; only the differential cross-check signal is missing.