Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb7fb07202a74f2…

MALICIOUS

PDF

84.3 KB Created: 2021-01-08 07:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3614b5dd00f64c0b7123de51783b154a SHA-1: 7f91b21d284411c4973f9d8dfb8988604bab55bf SHA-256: 6eb7fb07202a74f25bc228f6c5cf8dc8da438ee24d0f312a4d4388e55877f6fb
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious domain, traffset.ru. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing or trojan delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffset.ru/aws?utm_term=tecnologia+da+informa%25C3%25A7%25C3%25A3o+e+comunica%25C3%25A7%25C3%25A3o+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488317/normal_5fcbb02285063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379723/normal_5fea023aedc60.pdfIn PDF document text
    • https://wadazujirala.weebly.com/uploads/1/3/4/5/134596454/6488041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427820/normal_5fd819e191dea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384650/normal_5fe39f92a49ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420608/normal_5fda68f6a160b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/909cc174-5fcf-4bd8-872b-79ce9393bfff/16757364663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc34e79b-0672-482f-ae9d-94cba7986708/27966438284.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/burnout_3_takedown_pc_tanpa_emulator.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/scatter_graphs_gcse_questions_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1F 5548 bytes
SHA-256: 99eaebb075f4a5d12e64bf2e3a64db6744d3a358c1b26b6a24bae81ababc183a
font_01_sfnt_off00010cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFD 12772 bytes
SHA-256: 50c491383f2626887158eafc0fadc47f6de5e696e811937c0f6ad2e04a058fea
font_02_sfnt_off000133cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133CB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e