Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd1f4d95ad632d71…

MALICIOUS

PDF

70.3 KB Created: 2021-02-20 12:49:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c38ef39c009cea3b9cc0cd01459b59e9 SHA-1: 0744516a630761bb06c6795a843175e08383cfb4 SHA-256: fd1f4d95ad632d7118cd241806e5bee6b7834b05e9f8645be821751a10da36c2
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://seumenha.ru/123?utm_term=proficy+machine+edition+9.7+manual` suggests a phishing or social engineering lure, likely attempting to trick the user into downloading further malware or providing sensitive information. The presence of numerous unknown URLs further supports a malicious classification.

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://seumenha.ru/123?utm_term=proficy+machine+edition+9.7+manual
    • https://cdn.sqhk.co/xewiliwilax/5JNMgdv/personal_stickers_for_whatsapp_app.pdf
    • http://buyervannakupitvsem.xyz/defedufepesizofafukawc0zy.pdf
    • http://winoorama.fun/841227467340rzbm.pdf
    • https://cdn.sqhk.co/ruwonumatag/hdyrTbE/66125452126.pdf
    • http://findssldz.xyz/5th_edition_character_sheet4c40q.pdf
    • http://flipping-car.online/direccion_nacional_de_catastro_cedula_catastral_informadawum0r.pdf
    • http://bogplaktnc.fun/41421769475z25jv.pdf
    • http://maska-respirator.com/juzuzafepagyg8sm.pdf
    • http://instapriz24.online/simpsons_clue_sheets92adi.pdf
    • http://vannabanyavsedela.xyz/fudaviwiz6it9g.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wazotojemov/7338197404.pdf
    • https://s3.amazonaws.com/jagux/powerpoint_presentation_template_professional.pdf
    • https://s3.amazonaws.com/wuvepilamamuse/59085598946.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_off0000d42e.bin
4c2860a7ad58a7d2db5f939fde84c7b1995a6ef26a122d745debf66b0afbfee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD42E 5456 bytes
font_01_sfnt_off0000e6a9.bin
eaab9bf57b19ec7df3ee4f1d7c768ce4822a37284c0e11c9b331462aa54b098b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A9 11328 bytes

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