Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6d7b9809a32074…

MALICIOUS

PDF

77.7 KB Created: 2021-03-21 10:29:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2b711082170053971125fe0d433cc1d1 SHA-1: a52809596499fc4495d1f6061eeef74c694747d6 SHA-256: 1c6d7b9809a3207421f22cc0190e3704d30d8f6e9526186b9e07db67235f058f
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily corrupted, contains strings related to product names and application versions, suggesting a lure to disguise the malicious intent. The presence of multiple embedded URLs further supports a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/strik?utm_term=casio+collection+sgw-500h-1bver PDF link annotation
    • http://pogawubujogeje.mypressonline.com/94802705159.pdfIn PDF document text
    • http://biweekamnf.com/pmbok_guide_6th_edition_knowledge_areasoseqf.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/ejck0jf/word_puzzle_games_unity.pdfIn PDF document text
    • http://blancer.xyz/how_to_write_a_literature_review_using_apa_formatx8n5x.pdfIn PDF document text
    • http://olx-delivery.cc/9708639644tnw83.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/iiHhjiK/history_of_christmas_traditions.pdfIn PDF document text
    • http://xenakasewexibal.sportsontheweb.net/51046451659.pdfIn PDF document text
    • http://kimiter.medianewsonline.com/54350794921.pdfIn PDF document text
    • http://habercigo.com/iso_14001_internal_audit_checklist0hbiv.pdfIn PDF document text
    • http://amin-ukraine.net/94169277685cnmk5.pdfIn PDF document text
    • https://cdn.sqhk.co/xosaletozobi/peBRio8/choir_choir_choir_hallelujah_sheet_music.pdfIn PDF document text
    • http://firstsecu-paypal.com/cuales_son_los_conectores_de_ordenrt4an.pdfIn PDF document text
    • http://tarekupi.scienceontheweb.net/lisafakif.pdfIn PDF document text
    • http://mivetys.xyz/884604579588pbej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/2833598768.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/jibatafejudesizuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/lightweight_groundsheet_material.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/toyota_avensis_2007_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/lusavikup.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_off0000ef90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF90 5608 bytes
SHA-256: cd59f41712754ddc4468c80c10ed25f1e05bb82e059624609b23d997e9c7785d
font_01_sfnt_off000102c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C1 11576 bytes
SHA-256: c3dff0e75ee2e7919b44207fe8839c7607967c4995b46185718840d842715fd1

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