Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0d2a7650dcd420…

MALICIOUS

PDF

89.8 KB Created: 2021-03-29 18:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32de39edb9166d09f866415cc68aae03 SHA-1: 7568787b651e62d6be32ecbba93f8ec3d8d38ae4 SHA-256: 5b0d2a7650dcd420f729d192624bc9f75952e46cf8acb0bd05d971cc5f83291b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the presence of an external URI suggests the document is designed to redirect the user 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://kuzutuzo.ru/strik?utm_term=explain+the+two+routes+to+persuasion
    • http://zufepatajuju.22web.org/emotional_intelligence_2.0_audiobook_full.pdf
    • https://cdn.sqhk.co/sebixodof/RggjfRS/workday_login_digikey.pdf
    • https://cdn.sqhk.co/zemakojunil/jgdggic/50510318802.pdf
    • https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/43e287532560792.pdf
    • https://cdn.sqhk.co/rufebumu/amnhf7i/81331117891.pdf
    • https://juxibawazorar.weebly.com/uploads/1/3/3/9/133997202/veruvokagesex_mupizo_fivifowogajud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gepikadagutuv.epizy.com/business_writing_skills_books.pdf
    • https://90e68d66-75cd-4f9f-aa76-03b1e6b67b4d.filesusr.com/ugd/324cd8_abdf90d8a0584b6a93ebb678c21e7801.pdf?index=true
    • https://c03439ef-6557-4199-865e-586791a52b6c.filesusr.com/ugd/6bb4a2_ea95d5d514d8442caa48b1922b7078c1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/357bbdc4-20ae-4ec0-b1b5-c5a24f9fa546/fenawamatasojoxa.pdf
    • https://6f465708-eb37-4ee2-8658-ebeec6cd93ea.filesusr.com/ugd/4bb103_86321d3ef5c941da9f94a9216e347d28.pdf?index=true
    • http://gijafusatuvaxoj.rf.gd/formato_de_contrato_de_confidencialidad_para_empleados.pdf
    • http://veveliwuw.rf.gd/60113673266.pdf
    • https://uploads.strikinglycdn.com/files/7a4be8bf-5cdc-4235-b5fe-f09a66716e2b/77742441379.pdf
    • http://pinezininefos.epizy.com/english_worksheets_for_grade_2_prepositions.pdf
    • http://zenowalu.rf.gd/independent_clause_examples_with_answers.pdf
    • http://mejefelutirarej.epizy.com/noropepirudumofaderuga.pdf
    • https://uploads.strikinglycdn.com/files/5040e457-fa1d-499b-80ba-ca8f50d98766/elementary_statistics_10th_edition_answers.pdf
    • https://uploads.strikinglycdn.com/files/248c796f-e25a-4136-9026-0f35980b3f6f/menekukizoma.pdf
    • http://sabepusejoponi.epizy.com/veterinary_anatomy_colouring_book.pdf
    • https://uploads.strikinglycdn.com/files/2b49e1fb-1ce0-47eb-82b5-f426fb86aa36/41559369041.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001108f.bin
c0e12f1e2f5e56b244961ad39230516825fd07a9c02db5dd5ec029a98c3470ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1108F 5024 bytes
font_01_sfnt_off000121b3.bin
f2c297e69fc93d301ccec515be43ece77e9459af246c98e3f87fc3102153d05f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121B3 10492 bytes
font_02_sfnt_off0001459e.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1459E 16204 bytes

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