Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ef404888d4fcf4…

MALICIOUS

PDF

61.2 KB Created: 2020-12-03 16:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: c75fa49dd1066c7fa59e838dad54c7e7 SHA-1: a6be73065e64934337e6422cd321de86fe6536e8 SHA-256: d3ef404888d4fcf45f8718f75e874318bff003e56b4d32aa92f044a992473f61
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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=alameda+theater+showtime PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371543/normal_5f89328dc80fc.pdfIn PDF document text
    • https://povizizumor.weebly.com/uploads/1/3/4/6/134636509/7590429.pdfIn PDF document text
    • https://gudifikopar.weebly.com/uploads/1/3/4/6/134627505/bemigeluwob.pdfIn PDF document text
    • https://kamejufozafa.weebly.com/uploads/1/3/4/8/134891268/weforadito.pdfIn PDF document text
    • https://karubidodofibe.weebly.com/uploads/1/3/4/3/134316277/povuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421615/normal_5faeeb53a45e9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbffe9d5687f52b6b7c161f/t/5fc0ee3d1972c46e3cc0431f/1606479423333/wotiduligi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc106a17848ba205d193829/t/5fc395849ee0f32b87c1bcf7/1606653316625/82312400435.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5b0fa97599144eeebfa8/1606376218639/95920664934.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd9af9866f3fd2d4d777/t/5fc121983485235c86ef0856/1606492569374/20606749949.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4c87e6d49a06bb88311e/1606372490253/62484746164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf257b0e-39c2-4f1d-b879-39736e6dcbd2/fusesaniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf0de6f8-ed73-4e72-8d26-b82892c6a333/how_to_clean_converse_white.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b9485cc-c457-47f6-995f-ef2d425434ca/18575949826.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_off0000b277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB277 5148 bytes
SHA-256: b9ed049007ecc9bb09f5a2a0aec5d2814b0a858ecdddd5e1b9b0250b87390ede
font_01_sfnt_off0000c3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D3 10696 bytes
SHA-256: 47e5bd9c3e1c7ac4b8ddcbf7d60e780992b3cdeec043a0144411043e18f1d55d

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