Malicious PDF — malware analysis report

Static analysis result for SHA-256 88418927eb54adfe…

MALICIOUS

PDF

72.1 KB Created: 2020-11-24 11:24:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4068c1221b7f51a34e4cdc03c9983abb SHA-1: b6ff9bc3e1095e32a7b3671a8c79e453435d252e SHA-256: 88418927eb54adfe4449b7f5e4f32247419fa956c3952f7109761f48ee7d796e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'trafftec.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'Pipeline de lideran ca ram charan pdf'. No scripts were extracted, but the PDF structure and embedded URI heuristic indicate malicious intent.

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://trafftec.ru/strik?utm_term=pipeline+de+lideran%25C3%25A7a+ram+charan+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392474/normal_5f9dcfc13435e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379377/normal_5f99896c6cc00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_5f8a52533267e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387715/normal_5f8ce274ba889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459625/normal_5fab6c86ab4dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421056/normal_5fad3011ecf8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414864/normal_5f9596d81ccc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f8b5b7749909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f871ee35a97b.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/4ba54e29-e639-4a75-9be1-3a3b4f00bbde/baby_cuddle_lose_imprint_quality_spe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec6ddb2-37ce-4393-96b2-33d342cf416e/95016257287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82345eb9-b2f9-4085-8c0d-3a92604b35cd/dragon_ball_z_devolution_5.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/f2p_range_training_guide_osrs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b9a800-dee4-4ede-a2d5-f3d898f0073c/vamaxezojife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdf4420d-39d1-49b2-8e9d-aff63854b8b3/dragon_ball_z_tenkaichi_tag_team_cso_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/56895116612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e813a995-fd28-480a-9637-415b8714e51b/gopajibaxewubagijuxemuju.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_off0000db37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB37 5400 bytes
SHA-256: 21db290113259f9ab2295b62af7bf9926517ed84c43d2701b884f71d12fc56be
font_01_sfnt_off0000ed21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED21 10568 bytes
SHA-256: 4753805f8c87dcce3a8757902ee73ac7f811561b22f7271da5155df1175b2bb2

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