Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e866a2c05869cdc…

MALICIOUS

PDF

58.5 KB Created: 2020-11-10 12:12:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93507e2af21ac7aeb6572f957ae3dc1e SHA-1: b9accf5378c0120ccab4ebfb8d3ffcdbf7bc2e4c SHA-256: 4e866a2c05869cdc365e23e9cb479a2e2f7c9fafa505cf4e0e752b17f844c28c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for popular anime content, suggesting a phishing or malware distribution lure. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI are typical of phishing documents designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=my+hero+academia+episode+7+dub+season+1
    • https://cdn-cms.f-static.net/uploads/4373281/normal_5f8897dd7b2c1.pdf
    • https://bifurizikekoson.weebly.com/uploads/1/3/4/6/134690439/7f3a8b6f61.pdf
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5faa316987a59.pdf
    • https://kumupesefutevun.weebly.com/uploads/1/3/4/4/134463509/zepopefizegiru-zolodom-gubobazexugipi-jololivojik.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/048e11cf-5caf-4472-acc4-6283965a6a77/6108760357.pdf
    • https://uploads.strikinglycdn.com/files/533153e6-eb03-48cf-96e7-d30826e02e23/wojexav.pdf
    • https://uploads.strikinglycdn.com/files/04f3d99f-28b2-48c5-9824-1dfd8199d8a6/81371708979.pdf
    • https://uploads.strikinglycdn.com/files/bb69f996-70f7-44d5-b271-7b279f1c2a42/tulonolevutisagixifa.pdf
    • https://s3.amazonaws.com/minaxigevani/moranama.pdf
    • https://uploads.strikinglycdn.com/files/ce82fb9c-f0a8-4a6c-a4c6-afbd5f2d8b1c/kutomibubeketomu.pdf
    • https://s3.amazonaws.com/firigugixujotov/59957624558.pdf
    • https://uploads.strikinglycdn.com/files/f90c6b43-6e21-4125-9c8c-47ac51eafc40/descargar_emulador_de_xbox_clasica_para_pc.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a816.bin
011b200c940abc35483bfee16133b983575628e59ba7ffdfa24cd27c49e87369		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA816 5660 bytes
font_01_sfnt_off0000bb3f.bin
92e3e9ae907f3c06d21126578a03fe124a9f8b1ab1e87ea44493a5edce13a771		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB3F 10140 bytes

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