Malicious PDF — malware analysis report

Static analysis result for SHA-256 00eea490dc0b58f9…

MALICIOUS

PDF

77.9 KB Created: 2021-01-11 20:09:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 268178847353d52413a0a3fcddba6a09 SHA-1: 73e752df485323ff32be39f8394ab65b7e518373 SHA-256: 00eea490dc0b58f90c5f49ac85d48ed496ea8a121ebbb499eb67b6ccedfe81c1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffe.ru', which is likely a phishing or malware distribution domain. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially as a spearphishing attachment.

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://trafffe.ru/123?utm_term=rude+dog+and+the+dweebs+cartoon
    • https://cdn.sqhk.co/xinulezebi/jhidiaD/34335661032.pdf
    • https://cdn-cms.f-static.net/uploads/4501989/normal_5fd1c4c8e0f91.pdf
    • https://cdn.sqhk.co/luxixumogez/fhcKegg/spirit_run_free_sheet_music.pdf
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5f8f9dca57104.pdf
    • https://cdn.sqhk.co/bufutoje/jfgihfV/lugarozijefa.pdf
    • https://cdn.sqhk.co/kufejeni/fgdhbNO/muvobepuwazutolavitoroxev.pdf
    • https://cdn.sqhk.co/jefapukawore/ijajjxP/facebook_lite_login_download_free.pdf
    • https://cdn-cms.f-static.net/uploads/4382960/normal_5fb7e5098b132.pdf
    • https://static.s123-cdn-static.com/uploads/4459337/normal_5fcf8064b333d.pdf
    • https://static.s123-cdn-static.com/uploads/4427086/normal_5fc473789be56.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wuwabobujasivor/23272889249.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_off0000f37c.bin
4664fc92bd3ccce15826521dc0139fcdab4d608f935b960e66c0d0a3ba6b445f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF37C 5408 bytes
font_01_sfnt_off000105f6.bin
5a43bab1f678b7dd9fcd22cc74710e01935a510b411486ba783a8098af10dd0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105F6 10740 bytes

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