Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e570ba7bdec894…

MALICIOUS

PDF

69.5 KB Created: 2021-02-28 10:33:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 34d27a13d86e8e10dca0bf0fab63e93d SHA-1: becd7137d0a12bef958d6c2021776187d9138603 SHA-256: 52e570ba7bdec894b90caccb72b2d16a6881c3baaf55a51a6d2336f74d779078
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/award?keyword=the+art+of+japanese+joinery+pdf+free+download PDF link annotation
    • https://wuxagukokixeg.weebly.com/uploads/1/3/5/3/135398542/4305384.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475727/normal_6008973febfbb.pdfIn PDF document text
    • https://cdn.sqhk.co/titabofasika/6K91o5T/tuzojali.pdfIn PDF document text
    • http://sizoxuk.22web.org/badrinath_movie_video_song_hd.pdfIn PDF document text
    • https://dawasaga.weebly.com/uploads/1/3/0/9/130969366/biwakon.pdfIn PDF document text
    • https://belafawejogawol.weebly.com/uploads/1/3/4/5/134583754/5490a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403121/normal_5fd33fb8383d1.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/hdhfkHN/judagigew.pdfIn PDF document text
    • https://disadaniti.weebly.com/uploads/1/3/4/4/134463451/xilavefubaluka.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/MIjeaXH/android_9_digital_wellbeing_oneplus.pdfIn PDF document text
    • https://fisadurubimu.weebly.com/uploads/1/3/1/4/131409264/2d5a80d.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/bjajgcl/supowimigoxi.pdfIn PDF document text
    • https://lutitisuputusi.weebly.com/uploads/1/3/1/4/131437948/talaj.pdfIn PDF document text
    • https://nituxokijawagez.weebly.com/uploads/1/3/0/9/130969825/kuwotejudibu.pdfIn PDF document text
    • https://medotufise.weebly.com/uploads/1/3/4/5/134512565/wiwofuxixage-nuzagiw-mapojogamelelo-terut.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/T2U22ha/guveneramugamun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486778/normal_6017c41346795.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/ajaOjes/16494627750.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD277 5348 bytes
SHA-256: 6e5b7700486283bae825fbdedc9b42fbcbff87eb81f847c5051ecf9f56822673
font_01_sfnt_off0000e4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BB 10560 bytes
SHA-256: 237951ea2d9c5634f3c6dd20f840896acd2803911762b79673d8fa90cf7f8178

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