Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc41d011d6b9b59…

MALICIOUS

PDF

72.5 KB Created: 2021-02-26 12:56:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 99b49c75ee0b06c7428e07038b31dfb1 SHA-1: 740f78061fff52d3df9cd0880acdf75249b98c1d SHA-256: ffc41d011d6b9b59e51faa713328c3ac54e0090902e2e630db32f992e916cfa8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/123?utm_term=modern+political+thought+david+wootton+pdf PDF link annotation
    • http://probmaka.tech/sahih_bukhari_malayalam_translation_free_downloadkf3oh.pdfIn PDF document text
    • http://pilizepanaritob.22web.org/ignou_b._ed_2018_application_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_601f53f76dc88.pdfIn PDF document text
    • http://karaulovlife.site/vebiluzapejodl6uy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445573/normal_60032be9688a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467298/normal_600fc4446889b.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuputid/ihfPphd/lubakenirefiwida.pdfIn PDF document text
    • http://retys.space/xanuvvvrwx.pdfIn PDF document text
    • http://fuckfrsky.com/9901291457i86es.pdfIn PDF document text
    • http://requiredjokblog.com/atomic_weight_of_elementsow8e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422884/normal_5ffe7a7c97873.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/loranoduzuja/answer_key_traduo_em_portugues.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/92029450558.pdfIn PDF document text
    • http://wosumobikufiw.rf.gd/blogs_de_libros_2018.pdfIn PDF document text
    • http://sujosivetobifir.epizy.com/wikoxexegakoli.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_off0000dc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2C 5396 bytes
SHA-256: 4c6c0eed7e088eb9f1fd29e067bc4db23fbb6c7ff8b66cb5cad9f14dde36b1a3
font_01_sfnt_off0000eea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA8 11488 bytes
SHA-256: f76ed4b8a53181cced6059245f20549071d3dc40b2b41c4afb126edf49274941