Malicious PDF — malware analysis report

Static analysis result for SHA-256 234ce34a680ccadc…

MALICIOUS

PDF

71.1 KB Created: 2021-03-02 06:44:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cf89f6a50d97c2742b69e3cba5e265c2 SHA-1: d5319aa8d49ccad44829b66435c39d9f186815c5 SHA-256: 234ce34a680ccadc5984a4614a7117f7db931cbd37794d82ca60451205cd724d
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://zajinet.ru/wix?keyword=naoto+social+link+rpg PDF link annotation
    • https://subijiderekura.weebly.com/uploads/1/3/4/6/134616270/lonifudiduvebe_rawexutatokoxi_dunoxorebusofo.pdfIn PDF document text
    • https://bikigevoxepasi.weebly.com/uploads/1/3/4/7/134716722/vimoxigibewiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453336/normal_5fc9ec04286d0.pdfIn PDF document text
    • https://cdn.sqhk.co/maputaliki/fihiija/word_attack_strategies_for_older_students.pdfIn PDF document text
    • https://zujamabosav.weebly.com/uploads/1/3/4/3/134363941/gujozovuvi.pdfIn PDF document text
    • https://xuzizalebu.weebly.com/uploads/1/3/4/7/134772475/divijewulobub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481515/normal_600074376ffcb.pdfIn PDF document text
    • https://wakavofidokevi.weebly.com/uploads/1/3/2/6/132681750/senasafarelevoxi.pdfIn PDF document text
    • https://xuxasogunoniku.weebly.com/uploads/1/3/1/8/131856570/jazaderuberu.pdfIn PDF document text
    • https://sumajodezidozi.weebly.com/uploads/1/3/3/9/133997227/c34eac43.pdfIn PDF document text
    • https://nenejafaf.weebly.com/uploads/1/3/5/3/135393494/bevuzorubesupu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388052/normal_5fdc215a90955.pdfIn PDF document text
    • https://rezibufebaxiban.weebly.com/uploads/1/3/2/6/132695258/24740.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383571/normal_5fc9789a91e19.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/e3b1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392453/normal_60141f5e5505a.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_off0000db26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB26 5136 bytes
SHA-256: 291246cad35818aef8c30fab0b7091e236e847572c9002cdbd83f2041b786548
font_01_sfnt_off0000ecb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB7 10332 bytes
SHA-256: 80acc976921e13fc20e18568d8808db802dd77b3755e2bd1680b595c9416dbce

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