Malicious PDF — malware analysis report

Static analysis result for SHA-256 f333ddc4c173ee63…

MALICIOUS

PDF

77.0 KB Created: 2021-04-04 12:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 954743a330c37cec93f43321df7a673f SHA-1: 4483b72ffde12c6e1e5ad83c890fcfb07dc521d0 SHA-256: f333ddc4c173ee63173317f8797edbfd659eb9b88a1cafb5d53f0add3b42adcd
96 Risk Score

Malware Insights

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

The PDF file contains a URL that is likely part of a phishing campaign, aiming to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to a malicious site.

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://lozipotod.ru/award?keyword=achtung+panzer+uwaga+czo%25C5%2582gi+pdf
    • https://cdn-cms.f-static.net/uploads/4419192/normal_60446fab513a6.pdf
    • https://static.s123-cdn-static.com/uploads/4476954/normal_5ff252b187658.pdf
    • https://panasijizikefiz.weebly.com/uploads/1/3/4/4/134446590/zomusawema_wudukogazu_bisamavoga_kekefusi.pdf
    • https://cdn-cms.f-static.net/uploads/4424331/normal_602f1ed78b899.pdf
    • https://nitipitu.weebly.com/uploads/1/3/0/7/130775162/gudedopidabawejaxel.pdf
    • https://cdn-cms.f-static.net/uploads/4417658/normal_6036b851f36cf.pdf
    • https://cdn.sqhk.co/rifarako/iz70Pwp/3d_origami_animals.pdf
    • https://cdn.sqhk.co/rutisifelom/IgjZjjt/colorchecker_passport_photo_2_manual.pdf
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/biferapoxexexow_pibizugakukuxen_napatadebo.pdf
    • https://bevikutemo.weebly.com/uploads/1/3/4/6/134648684/9221f.pdf
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/wekuxetuz.pdf
    • https://cdn-cms.f-static.net/uploads/4451363/normal_6026246a4a0e3.pdf
    • https://cdn.sqhk.co/gidenateg/gjhdvjc/84821031230.pdf
    • https://cdn-cms.f-static.net/uploads/4393637/normal_601995ff4297d.pdf
    • https://static.s123-cdn-static.com/uploads/4529095/normal_600515515447e.pdf
    • https://static.s123-cdn-static.com/uploads/4370560/normal_5fe422525323f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/99b7ee0a-fc52-4ac9-8b8f-8d87d03f5af9/how_to_graph_a_mathematical_function_in_excel.pdf
    • https://uploads.strikinglycdn.com/files/0534b56c-e77d-48eb-a72a-fbb8762c50bd/sum_of_interior_angles_of_quadrilaterals_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/3d47dce3-0d31-468e-acf6-ff679fe64b91/lekepawirubaxixunef.pdf
    • https://uploads.strikinglycdn.com/files/d7b6d0c3-168e-4fbf-974c-1b12b426d132/change_management_theory_in_nursing.pdf
    • https://uploads.strikinglycdn.com/files/46b08fad-2f55-4f5d-b79e-966481d14363/satirijovexetobisamok.pdf
    • https://uploads.strikinglycdn.com/files/f9056738-a71c-480f-9109-8e360c361a23/how_many_calories_are_in_a_sonic_cherry_limeade.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_off0000eb8e.bin
65e18ad728544cfccad164108ecff340c5e7ff595902781f3a083ab12c65d792		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8E 5392 bytes
font_01_sfnt_off0000fe0d.bin
412082b86fa9d425f1ad0bdb064753f7c77010054f8f9635939cd6ba9d80ff65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0D 12236 bytes

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