Malicious PDF — malware analysis report

Static analysis result for SHA-256 4254d643d585c43e…

MALICIOUS

PDF

42.2 KB Created: 2020-11-01 06:20:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 08542c3241be6893715d4aa3b4a9449c SHA-1: 80ce2afe3a3b3bf612c7c9e98c10ef7b042a472f SHA-256: 4254d643d585c43ec713bc4b95ea426eaba3c0912594cc06c6ee3db8b6784e6c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.link/123?keyword=no+longer+human+junji+ito+plot In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386591/normal_5f8f80c1a4664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449602/normal_5f9e32b4aaf00.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bakoloj/queen_to_play_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/45305077272.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/jukokadorexodutipulufi.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/36281038985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd4145b2-0d57-4336-a7b8-5315c760dd39/xejetirutape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/325ab814-9aff-4328-8b32-93dc5d78800a/jakunofenubifevozek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49a38d33-7782-4841-9311-4f4c97437421/faces_of_oppression.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/vepibebikemagesegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe50adf6-3390-4cbc-aeda-bb318c3d3a55/fakekoxajof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/893895f0-cca1-4ea4-b9ba-a987286c87fc/70380933796.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/nz_shooter_manifesto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1551/9387/files/go_math_grade_5_homework_book.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CB 5100 bytes
SHA-256: 04f966673cc849cadb3fc04e22912993bf15bd195a7c2bf71064ad00ff295247
font_01_sfnt_off00007a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A00 10016 bytes
SHA-256: 3291c9de39eca0dc86b99b61581b5a8a421316a95d09d89a6487bbc993094c89

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