Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afc67777b2d3d39…

MALICIOUS

PDF

68.7 KB Created: 2020-11-09 21:44:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 1d5599498c8d11b1b69d6ab45b3c84e4 SHA-1: e1cf8272e2ba112f4e99a7f34f22fd8aafc3a296 SHA-256: 4afc67777b2d3d399a3ab7838e6a9e5fd9220637679b904158918f58db977545
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/wb?keyword=low%20back%20bra%20converter%20straps PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379030/normal_5f92f2ead5164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_5f9b42a71b097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8a3de12ca65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5f9d6be816184.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fcdf6256-02d6-4963-844b-b8721c87087c/34223467313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99f4d1f3-6ede-4902-a2cb-6872b5be622f/noximapur.pdfIn PDF document text
    • https://s3.amazonaws.com/tagorarib/crrel_new_hampshire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c62d7a-d2f0-428e-acc7-8aea9685f2b6/kingdom_99_calgary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2198c68a-0229-4798-95c5-f1e69553fc85/9570539375.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/declaration_of_independence_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/2020_slang_language.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2FF 4932 bytes
SHA-256: d0c6693ffd7daf98e0aa0a09822e8ea0972ca861d04a0dae48a49daae3b44497
font_01_sfnt_off0000d3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DF 10636 bytes
SHA-256: 5759133d6c154c6e0d6b71741aa339c492b579b8efb2733a803f4c36ae9db062
font_02_sfnt_off0000f84f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84F 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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