Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d4d4b624fbb92e…

MALICIOUS

PDF

66.2 KB Created: 2020-12-18 01:08:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: bf60db188ffe37550d581fd9fab8fd52 SHA-1: cb093d51485788fbfad3b77d86225f3e4b1692a3 SHA-256: 26d4d4b624fbb92e7ccf2c13bafc3546aad67b8605f7c60b3e834bff60fb43d5
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Kendo multiselect custom template' and embeds a URL pointing to 'trafffe.ru'. ClamAV and ML classifiers strongly indicate maliciousness, classifying it as a phishing trojan. The presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/aws?utm_term=kendo+multiselect+custom+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368964/normal_5fd10e82c43b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f8f7a0e2fb42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377391/normal_5f9508fb75b74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_5fa77778ad6d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481527/normal_5fd906193ae26.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/74e87fa4-f559-407a-93c1-7a60333d5ff3/affordable_uniforms_north_olmsted_ohio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc595b3c14dfd36fe115843/t/5fd6399e034a586a4f3dff88/1607874981190/94921206244.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc512c9bf71053ccb2aa307/t/5fd63a3fab77727176896dbf/1607875137735/59752231516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97885fd5-95e5-4f5b-9775-f764c64caf1f/the_collected_poems_of_audre_lorde.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/cameroon_makossa_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe02285147b14804f95e9e/1606287912665/98634546549.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/jotugujugagev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e7b4647-d43b-46e6-a8f1-bee7c4ba8cbf/wipodanu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc172dc1452f90b7fe9340e/t/5fcf904a68c18617d416b0df/1607438411562/cheap_overseas_calls_from_australia.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_off0000c22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22C 5092 bytes
SHA-256: 269cb30e7f1a37c7a96ab7572b2e2002a43caa8206d8004677366cd7d7933de9
font_01_sfnt_off0000d370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD370 12148 bytes
SHA-256: 15375cd0920ea37a5b8bc0f6f9813bf97eda57f150765eacd7180c3f15b80b7d

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