Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b8396bedaeac0a…

MALICIOUS

PDF

76.2 KB Created: 2020-12-24 19:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 30fa2e26357c80b3b79ec7732d2d5335 SHA-1: 26c6c1fd3831924046d3f91ede9cadaabea6afbd SHA-256: d6b8396bedaeac0a433c6dd647218ef6bd2b84fb38c6758f35f3217c4f44d7ec
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to game instructions, which is a common social engineering tactic.

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://traffine.ru/strik?utm_term=jurassic+park+island+survival+game+instructions PDF link annotation
    • https://cdn.sqhk.co/lediname/YggRONy/nail_art_designs_memorial_day.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447916/normal_5fcad10730b13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387932/normal_5fa7f066a57d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478952/normal_5fb33c01d09f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5f8abdf2a3b89.pdfIn PDF document text
    • https://cdn.sqhk.co/riwajamugem/jjjIsjf/jurassic_park_chinese_guy.pdfIn PDF document text
    • https://cdn.sqhk.co/pibigovaxavu/hPjhihO/97759458591.pdfIn PDF document text
    • https://cdn.sqhk.co/jetobatu/tUig0jg/13517515764.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f9c2fec30fab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/liwafo/pho_viet_menu_liberal_ks.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/multicentric_castleman_s_disease_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/aion_gladiator_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kepevipawit/ubiquiti_m5_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/transformers_siege_barricade_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/pastor_recommendation_letter_example.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_off0000eb30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB30 5504 bytes
SHA-256: b785e637762a9ad6ad3945ebb75c9061561bcfe4d5c18fe36af39beb6e8f080b
font_01_sfnt_off0000fde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE5 11052 bytes
SHA-256: db8a51862ab899d76aefe79db5d552dbc698e69a59703e0f320078318c0657e8