Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b01b1c5e34d994…

MALICIOUS

PDF

73.8 KB Created: 2020-12-30 19:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: ccf6dd011102be896bf730716fc58898 SHA-1: cbae7d2845d2c8f134a7d433ba529ae583eae7b9 SHA-256: a8b01b1c5e34d994d232c9a02dc9b6977c0b2b73cf0a618e03b45a8828866387
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://s3.amazonaws.com/minaxigevani/genesis_bible_study_guide.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5f91bfcdb0f71.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/JtEghyu/devil_hunter_eternal_war_redeem_code.pdfIn PDF document text
    • https://cdn.sqhk.co/zujagepax/ggjpjiK/police_siren_lights_sounds_2020_emergency_alert.pdfIn PDF document text
    • https://livadasim.weebly.com/uploads/1/3/4/3/134312527/27d3811.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/fivajolarabafekoluxaz.pdfIn PDF document text
    • https://mabulibatelirip.weebly.com/uploads/1/3/4/5/134597637/judevusasefapa-komubi.pdfIn PDF document text
    • https://riwusivi.weebly.com/uploads/1/3/4/9/134900433/zokelapef.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/possum_badge_exam_answers_fallout_76.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/HXidgcY/cartographic_scale_definition_geography.pdfIn PDF document text
    • https://xokekomoto.weebly.com/uploads/1/3/4/5/134598663/luminarofikig.pdfIn PDF document text
    • https://traffmen.ru/strik?utm_term=dinosaurs+cards+dino+gameIn PDF document text
    • https://s3.amazonaws.com/voxulija/zip_rar_archiver_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000e55c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000e55c.bin)
    • 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 extracted file (font_00_sfnt_off0000e55c.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55C 5224 bytes
SHA-256: 21f16897df064b98161b39052904a36fd5062578817f76d448eb34af6d90a386
font_01_sfnt_off0000f710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF710 10580 bytes
SHA-256: ec6c230c714a283e373c85ae86b5df51020d761c3f0935eb63ff5ef4590efc89

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