Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e093e7cb8a4f9e7…

MALICIOUS

PDF

75.7 KB Created: 2020-11-14 11:15:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 81b7432d2a5cb0c706e0fe62271ae807 SHA-1: 24e845d030b2add27bd077c89a6de54f28a68221 SHA-256: 7e093e7cb8a4f9e700d98beac04e9e4da35ece4a002488d6a7bd0b04ec1aabd0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'traffset.ru', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests it is a lure document, and the presence of embedded URLs aligns with the T1566.001 (Spearphishing Attachment) technique.

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://traffset.ru/123?utm_term=edge+pro+sharpener+vs+wicked+edge PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f870138bf6fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380681/normal_5f8ff9698e4ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5fa2bd6b80777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422876/normal_5fa33ced4457a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f87e099ad677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388041/normal_5f8d9fad180f3.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/ce0e0467-d780-4351-bee9-9c3faff02ff2/rebecca_caudill_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee9eb27f-b92f-4efc-b202-bd8a768f089f/best_brand_of_mattress.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/aarti_kunj_bihari_ki_girdhar_krishna_murari_ki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69781877-fa67-413d-be81-295978cd3d78/59418393058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16523010-a066-4c0e-9359-1b8bbd6af6a5/temotolagewexud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2831554b-7853-44db-92b2-0b81f4a9d35a/wupenozuguwimelixub.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/37009297994.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_off0000e936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE936 5476 bytes
SHA-256: da79c861626718dd584df9c5cf748271929bc9e2d8c65a203ef11107de372fd0
font_01_sfnt_off0000fbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEF 11168 bytes
SHA-256: 9c98943c1be56f8f981be9b763980ad46aa27d614804a0a34131823380c57f5c

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