Malicious PDF — malware analysis report

Static analysis result for SHA-256 c266f36384a2c5de…

MALICIOUS

PDF

80.4 KB Created: 2021-05-26 06:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0c5412b9abf16ce9d3e662613fcb85ff SHA-1: 8532c21b22b9f418d5bb53151bcfa42a0c837492 SHA-256: c266f36384a2c5de390160fcc27378c9235b7806191059fb6f40057079705156
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, specifically as a phishing trojan. It contains an embedded URL that appears to be a lure for downloading a game, which is a common social engineering tactic. The PDF structure itself does not contain executable scripts, but the presence of the malicious URL and the overall detection strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://pelibifir.ru/strik?utm_term=mini+militia+unlimited+bomb+ammo+nitro+game+download+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409122/normal_60362d6ea9e1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426557/normal_5feb3aa7582f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405929/normal_5fdcb00900ee3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486748/normal_605d76d7afbac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465908/normal_602a9d8ad53cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459477/normal_60072a1765fd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_5fd79a16e77ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382418/normal_606e65b8206c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_60122c110a573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_603bef49657f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382617/normal_6006a09211efc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456420/normal_60542c56d8a0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_60638813a0e04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476301/normal_60130bf2b6faa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476780/normal_5ff77f84be232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377905/normal_601cc18c0daca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368487/normal_5fdec7ade0141.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444370/normal_5feef3a9acce3.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/vovabagubajegeb/blade_sword_of_elysion_apk_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/67004088632.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/the_shining_remake_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/1316659752.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/pimumobosiw.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/the_summer_i_turned_pretty_summary_wikipedia.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/zaguw.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_off0000f94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94C 5404 bytes
SHA-256: ab80fdbfc10c23b33044d9a7fffa4cda0519857700949b03e72557340b90f52b
font_01_sfnt_off00010baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAA 10996 bytes
SHA-256: fc67e5ae8bafd7d66693a804d9e53b21047cc1737cdba8ec09ba118b8043dca5

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