Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd4e679545eeb3f…

MALICIOUS

PDF

42.4 KB Created: 2020-11-05 08:58:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 82d75e71e90cffcb61ea4c6803ae7170 SHA-1: 33261f6bad77ca892e5543f943af415b3feee5ea SHA-256: 3dd4e679545eeb3f326e57f8f17520e4cd36003ab89b95a1d5c6904abefe1996
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://gettraff.ru/wb?keyword=bilinear%20transformation%20circle In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f95561f3121f.pdfIn PDF document text
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/f764af35c61.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/buvipulezu_gosoguj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f9c2db702481.pdfIn PDF document text
    • https://nepajomawowezuw.weebly.com/uploads/1/3/4/4/134462508/pafuruzu.pdfIn PDF document text
    • https://jaketomerinojox.weebly.com/uploads/1/3/4/1/134109184/rozeketula.pdfIn PDF document text
    • https://kolerekum.weebly.com/uploads/1/3/4/3/134350376/senipotolet.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/lodazojamuva/91460928948.pdfIn PDF document text
    • https://s3.amazonaws.com/mupudipuvo/vxl_3s_esc_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sibenuvokiwuz/dekiranulovegub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7358f0af-d94b-4cf7-963f-b8eb8ca5c10a/zugigifuramezuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7392de96-cdb8-4588-8e03-c224eca45d48/pipafozatop.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/tutuapp_apk_android_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/definition_of_working_capital_management.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/80104885699.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/ridgewood_elementary_school_portland.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_off00006560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6560 5076 bytes
SHA-256: b24004e7e89d44d25c1813993fa3e6a04296b1ef747aa878a19936fcf2cee81e
font_01_sfnt_off0000768e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768E 11028 bytes
SHA-256: 0abe303bef0b43c7b75902d15b2658736cbf325beaf88675583f3b5664bd98dc

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