Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e8e40223876abc1…

MALICIOUS

PDF

71.8 KB Created: 2020-12-26 16:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9fe208a456e1ed034d5add85035abee1 SHA-1: 7095e651b906e2b5996288a4f15b14cf5077cff9 SHA-256: 5e8e40223876abc1be585ccda54effde112c7cefe15b7713355c4ede2bba4d97
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafftec.ru/123?utm_term=your+name+manga+set', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'manga set'. No scripts were extracted, but the presence of external URLs and the ML/ClamAV detections strongly suggest a phishing or malware distribution attempt.

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/123?utm_term=your+name+manga+set PDF link annotation
    • https://cdn.sqhk.co/bawivurolut/OnvgjgF/study_skills_curriculum_middle_school_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422137/normal_5f970a2a6f2ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368770/normal_5fa696df7714a.pdfIn PDF document text
    • https://cdn.sqhk.co/goremujoz/BCPP1gh/73176115374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383170/normal_5f9e529f650a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460241/normal_5fb54259d1344.pdfIn PDF document text
    • https://cdn.sqhk.co/bubarozotuj/ghiihgM/zifowis.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/42b8e349-95e7-4ffa-8e53-663ee357a0d1/honda_130_hp_outboard_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3920168a-35a5-4cba-b860-0b027ba92dfd/17863955348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d0e3ab-1345-47e1-b24e-4309b161cbc3/dusezeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e2c10ee-8272-415e-941f-fae1513d7e6c/mepifigagudotiwimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0c5406b-0af9-419b-a805-25d05410c4dc/como_te_amos_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8968a58c-28ee-4102-bb79-a0cbdacea247/72449509912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e45c61-9e3a-4bdd-b744-b33c924b9202/tecnicas_de_cepillado_odontologia_preventiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a04815a5-0c0d-4db9-a71c-9319c27b12ff/magic_fluids_apk_free.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_off0000dd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD99 4932 bytes
SHA-256: 4c830428c5cb266b9651af67e197e1f58be474e3228efebdac117817810be1a5
font_01_sfnt_off0000ee4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4A 10588 bytes
SHA-256: 95e295e2b6d1b46babc28fc2108621dbe707e7b6e675b654e0b54c6e7579b65d

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