Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d106ddd620b7127…

MALICIOUS

PDF

37.7 KB Created: 2020-11-09 12:44:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c4396f145ef62c61d6a966f117694d26 SHA-1: e611a33fe50f6b5b393242e393aada85471b9fb5 SHA-256: 2d106ddd620b71277024f4dbe9f9fccf175fb1b7b97c498c67c1eb92790cb4e1
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a high-severity heuristic firing indicating it's an SEO UTM redirector link, specifically designed for phishing via a 'free-download' lure. The embedded URL, https://trafffi.ru/aws?keyword=ffa+official+dress+girls, is the primary indicator of this malicious intent. While no scripts were explicitly extracted, the PDF structure and the redirector heuristic suggest an attempt to lure users to a malicious site, likely for credential theft or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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/aws?keyword=ffa+official+dress+girls PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383916/normal_5f8c388821796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5f97c1551af51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5f88b1ca1742d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417037/normal_5f9917ea9f66d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c52573f3-e9a0-49ac-9d33-9d3333b2cf67/93769784436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ee96e43-ac92-4611-a686-23e72d0f3e7a/49136075188.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/democratic_reform_and_activism.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/logitech_user_manual_for_mk710.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6df2ee44-573a-419f-8c9e-0e87c92a9b0a/divunivaxizivoteke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a34f8644-1bb0-4dde-8b19-83e21f027282/68878543132.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/zepemagogapubalox.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_off00005600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5600 5144 bytes
SHA-256: 5967e738ef577e3371535e37e74f015afe94ffbdc91bcf9a385dcc24dc51b06e
font_01_sfnt_off00006792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6792 10348 bytes
SHA-256: 7ce27eeec6b01b1495a2102bbe7483ca7a3895b584c98ed53e4a22401a019ac0

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