Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f7d0ec52831e08…

MALICIOUS

PDF

66.9 KB Created: 2020-12-21 06:24:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bad46573f37dc1d09f6819f803227085 SHA-1: e149150b9bd9b4a987a86d4f540a6081bc20cbd9 SHA-256: 65f7d0ec52831e0891edf9abb80f935e47c403f9710c251c26dd8cffd020befd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffine.ru/strik?utm_term=red+alert+2+4k PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412996/normal_5fbcbb779b1e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407062/normal_5fb9ebecd738e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485301/normal_5fcdbd19d344a.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/84a659c8-7ae5-4d3e-b7fa-5f87c7a7073e/nixebumelakami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08d3c6e2-27c2-4ac3-8fdd-9801f665f0a6/4310460743.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/base_form_simple_past_past_participle_list.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/javoxedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bda3d0f-a75c-4f61-b7ca-3aa6a7670b60/dolirokunazitutafetatipef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25ccdb14-356f-41c6-83d2-597dd02ab601/introductory_quantum_mechanics_liboff_4th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f0e0b02-91fd-4b1c-b5c5-356a3b8b7960/wevezugapuvafo.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_off0000c8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C0 4932 bytes
SHA-256: b9dda7febfacb1f5e454cfa7ef7f64ce0159ba61fec2d543415c6c88049608fd
font_01_sfnt_off0000d99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99E 11400 bytes
SHA-256: ff93c7aa5ef12fb35897e8a15165f771aaf7e9f940b5e179aa09c983fb6c022a

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