Malicious PDF — malware analysis report

Static analysis result for SHA-256 293b4a2ad2eae444…

MALICIOUS

PDF

74.2 KB Created: 2020-12-29 17:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 129f675d7205bb4d94f2b557d3e9f0e3 SHA-1: 15e62db387f6f43946f5d1dd6b39931512a323ea SHA-256: 293b4a2ad2eae4448c3c604ea37245a2f53032fd1e04ed22d2270c48a3b0068f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing, and the document body, though heavily obfuscated, contains references to 'Photoshop blur tool download' and 'wkhtmltopdf', suggesting a lure for software. No scripts were extracted, but the presence of an external URI and the overall detection suggest the file is designed to redirect users to a malicious site for further compromise.

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://trafffe.ru/123?utm_term=photoshop+blur+tool+download PDF link annotation
    • https://cdn.sqhk.co/lixozimiz/YFMgdJq/70314773096.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/hgjjcPW/shark_attack_game_app.pdfIn PDF document text
    • https://cdn.sqhk.co/wunokebewoz/ifjalv0/fijuwidimavelowojosupun.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/IjejOeG/police_shooting_battle_creek_mi.pdfIn PDF document text
    • https://cdn.sqhk.co/xobitabab/2hjjbNJ/jinatuzikosusugezexusod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415937/normal_5fa4137969f14.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/DAjcBji/fun_swimming_pool_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5f8c64e1377b9.pdfIn PDF document text
    • https://cdn.sqhk.co/kopizikob/jddaVja/pagakukuxujekemik.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/45567850-43c1-434e-a2c7-6a73a5fe786f/38311259374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d5b50c9-0add-4b4f-a7dd-7af448b7386d/54938512217.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/angularjs_templateurl_dynamic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ceb3024-17d4-4c8e-8365-7b66a9db4983/alpen_binoculars_10x42.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/samaroxagonebubenazurudup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb215063-0d96-4ab1-baac-ebef28f6bbf8/nonegoloboke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/007e1e75-3e40-4813-bb44-4b31272d8341/juegos_online_bubble_shooter_classic.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_off0000e421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE421 5280 bytes
SHA-256: 81cc9b263befa53e2ae9b4f1612e28c604c721e310c6edb0e4e2e94c33643fc6
font_01_sfnt_off0000f612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF612 10960 bytes
SHA-256: 43bb3da6db982b0163460263187c873a97efb9e10b0f21af4a2ef06881d6b547

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