Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f34edb78aa2400…

MALICIOUS

PDF

67.1 KB Created: 2020-11-22 10:08:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-01
MD5: 19cdde5b6e432a7796aadaa94fbfab84 SHA-1: 68e4296c3a8875eefd3d7a7e004f06f28088d85d SHA-256: a4f34edb78aa2400e0dc122842c8a9c0ccb6094497290358f520c6ea6317a8e6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?utm_term=panel+data+analysis+stata+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f9ad6430ae12.pdfIn PDF document text
    • https://fabapetabi.weebly.com/uploads/1/3/4/6/134687037/2d19e09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419195/normal_5f9680bf66234.pdfIn PDF document text
    • https://kosemezaped.weebly.com/uploads/1/3/4/7/134711049/0ac433fcec27e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000ca72.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000ca72.bin)
    • https://uploads.strikinglycdn.com/files/e5106db7-8d28-488c-8f4d-139acfdc54cc/74687955043.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/kuzinuvafedamubavagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9efd4a2-de97-4fa0-af6f-efec2a7c76fc/pogikamisutetebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d88489b-518e-45ee-8e54-1df875af70d5/1978_oldsmobile_cutlass.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/568b3b7d-ab45-4a96-b885-e0a14ce28c1d/catholic_missal_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6760e9a-b2d3-47b5-8f6e-9e39adaa864b/nawowuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c19c0bc1-df97-4efe-94c0-bbb35cb89dcf/how_to_train_your_dragon_2_online_stream.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a5f73d9-0316-405d-a1f5-14984beb9c0a/30745732925.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/quality_analyst_interview_questions_and_answers.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 extracted file (font_00_sfnt_off0000ca72.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_off0000ca72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA72 5028 bytes
SHA-256: 598a931a7c53992bdcebac61407914cbfcad65ab9a73b2b9146c6c148f2f309a
font_01_sfnt_off0000dba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA7 10672 bytes
SHA-256: 588461b94754e940f4b9882a5fd7bf7c9481149b6a4eeb72253334fdae688780

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