PDF_DANGLING_INDIRECT — Indirect reference to undefined object

low PDF_DANGLING_INDIRECT

What it means

PDF body contains an indirect reference (N G R) to an object number that is never defined in the file.

Why it fires

Lenient readers silently skip dangling references; strict readers may treat the slot as null and follow a different code path. On its own this is often just a corruption artefact — older scanner output and damaged PDF/A files commonly trip it — but it contributes weakly when paired with stronger anomaly signals.

Other PDF heuristics

PDF_LAUNCH_JS_PROTOCOL PDF_LAUNCH_COMMAND PDF_LAUNCH_MSHTA PDF_ADOBE_QR_UNLOCK_LURE PDF_JS_URL_KEYED_READER_EXPLOIT_KIT CVE_2009_2990_U3D_AUTOACTIVATE PDF_ANNOT_AUTHOR_EVAL_STAGER PDF_ANNOT_SUBJECT_HEX_EVAL_STAGER PDF_ANNOT_SUBJECT_MARKER_EVAL_STAGER PDF_JS_BASE_N_TOKEN_DOWNLOADER PDF_BASE64_PE_PAYLOAD PDF_BRAND_INVOICE_LURE_OFFDOMAIN PDF_BRAND_INVOICE_CLOUD_EMAIL_LURE PDF_CORPORATE_PRESENTATION_CLOUD_REDIRECT_LURE PDF_CORRUPTED_FILE_UPDATE_LURE PDF_CRACKED_SOFTWARE_SHORTLINK_LURE PDF_GAME_HACK_SEO_LINK_FARM PDF_DISTRIBUTED_PIRACY_LINK_FARM PDF_DOCUSIGN_DOWNLOAD_LURE PDF_DOCUMENT_ACTION_HOST_MISMATCH_LURE PDF_DYNAMIC_DNS_DOCUMENT_LINK_FARM PDF_SWF_NATIVE_MEMORY_CORRUPTION_PAYLOAD PDF_EMBEDDED_PE_PAYLOAD CVE_2010_1240_EMBEDDED_EXPORT_LAUNCH