Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a153a7e79056fb…

MALICIOUS

PDF

63.3 KB Created: 2020-11-26 07:57:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e189417c4282dc82a4e7090ef31bfde2 SHA-1: c4591c00888fedc2ab4b02e9a4a86e647be83e0d SHA-256: 69a153a7e79056fb6a97ee473cba02cccc3bf0adc5909292c656f6b5ad938699
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through deceptive content.

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://traffnew.ru/123?utm_term=dell+inspiron+3520+ram+upgrade PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480898/normal_5fadc1de4bb02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5fbc5758898c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377663/normal_5f8c26d1d4a1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5fbe97d962537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393020/normal_5fb980a36e564.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402000/normal_5fa218483d604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5f98d9f5f3cbf.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/figugipopar/93849156082.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/19457292411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff6d84df-b196-4c08-9a25-13e26103809b/23481066754.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d79d63e-4b6f-4a4e-9e13-dce7204ddcc2/how_many_ounces_does_a_pint_glass_hold.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/gesutagerolojer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d57bbfd-70b2-4761-a5f5-e94a05a06c8e/amazon_delivery_driver_houston.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/binomio_al_cuadrado_perfecto.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/16309363299.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_off0000b93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB93D 5840 bytes
SHA-256: 2fe0142c4e914fddc10fbfc085c9ca81a649c281a62d279ec37e102e919ecb52
font_01_sfnt_off0000cd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD09 10424 bytes
SHA-256: 27b808457b1863f031fa6a23a59935f6750cac9d2be8baee3ab3e03dea70abef

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