Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14d55b96e0cd696…

MALICIOUS

PDF

68.7 KB Created: 2021-03-30 00:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 865eecb9b6962c17e74c70e59c985be0 SHA-1: 07f0d8e634610b45ab882dc96dffff25661680e9 SHA-256: b14d55b96e0cd69659d3694f8100b7402d12a1f779becd433bdd94d69df4929c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'lozipotod.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests an educational context ('exercice verbe etre et avoir imparfait pdf') used as a lure.

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://lozipotod.ru/award?keyword=exercice+verbe+etre+et+avoir+imparfait+pdf
    • https://static.s123-cdn-static.com/uploads/4368497/normal_5ffc633405b17.pdf
    • https://cdn-cms.f-static.net/uploads/4391305/normal_601da0c9aabb1.pdf
    • https://cdn.sqhk.co/devisofage/Ngejgjc/amazon_discount_coupon_code_for_books.pdf
    • https://cdn.sqhk.co/nanagajog/Znifgih/70964226651.pdf
    • https://cdn-cms.f-static.net/uploads/4501961/normal_6024c7b8dbb71.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wovodijulenape.onlinewebshop.net/cria_de_ganado_bovino.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/mpsc_civil_mains_2016_answer_key.pdf
    • http://jasunusemoki.onlinewebshop.net/silaseb.pdf
    • https://s3.amazonaws.com/zemigiduwagafu/72994919298.pdf
    • https://s3.amazonaws.com/tufitijinexu/us_and_uk_military_rank_comparison.pdf
    • https://s3.amazonaws.com/makumapikeze/probability_and_statistical_inference_ninth_edition_solutions.pdf
    • https://s3.amazonaws.com/zurovajij/tnpsc_maths_syllabus.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cee8.bin
83d32cccad19640e888c48de15cd96d178d91fc6d2e5a3f29ffda7ac32419fc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE8 5316 bytes
font_01_sfnt_off0000e0f5.bin
909ee2663ba680dde43af72d5d9d7805c6efee1a218d45334388286acce6530f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F5 10952 bytes

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