Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b640a9633163be3…

MALICIOUS

PDF

49.3 KB Created: 2020-11-07 06:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 835635e24af62f61176406a61ecc18f3 SHA-1: 67bf8d4a026e112459a70f358eaaa1a13953dc86 SHA-256: 2b640a9633163be3d5aac90a1edda1bdef0d714db1bbf3a843399924fc4774d4
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffnew.ru/123?keyword=lpn+pharmacology+study+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369773/normal_5f9afda354465.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f9d7f33a271e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5f8e9efd44113.pdfIn PDF document text
    • https://ketawajizaw.weebly.com/uploads/1/3/4/5/134528489/zewosusexusovorub.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/199877.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/42abff5c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f8bacdc6c010.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/964276c7-4659-4f05-ad37-b1c863e08900/26787884189.pdfIn PDF document text
    • https://kututel.files.wordpress.com/2020/11/fewadoxefa.pdfIn PDF document text
    • https://wopuxipimupa.files.wordpress.com/2020/11/22652206605.pdfIn PDF document text
    • https://fajutavezuku.files.wordpress.com/2020/11/90286733446.pdfIn PDF document text
    • https://pomobuvumedu.files.wordpress.com/2020/11/xenocide_orson_scott_card.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/50720427896.pdfIn PDF document text
    • https://xobonub.files.wordpress.com/2020/11/jolin.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/1_goal_free_education_for_all.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_off000072c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C5 5492 bytes
SHA-256: fc727f4340a4accac0472fcbd7cc17fbabfcdde1a903a8ac6c51b6289d68b0f4
font_01_sfnt_off0000853c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853C 10644 bytes
SHA-256: 57353c1996a5eb525af0055dd40d9e3815637aedbea6e61139765f7dd4d5852e
font_02_sfnt_off0000a9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C7 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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