Malicious PDF — malware analysis report

Static analysis result for SHA-256 266c17d616657848…

MALICIOUS

PDF

70.2 KB Created: 2021-02-27 15:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f91387d61adfc82f0d86a7d2161c01a SHA-1: 2138adacd898ccdf9fa376c05e99d05c69ce2e0f SHA-256: 266c17d616657848942b5c79943e3b2104f32600ce83b65c2bef95e24d412e17
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/wix?keyword=tyler+the+creator+wolf+free+download PDF link annotation
    • http://kulinar2020.site/addition_and_subtraction_using_number_line_worksheets6r26a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_60053d6879aa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454277/normal_602a28d43bc72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477162/normal_5fe49db5779d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476954/normal_6035b2cf52ca0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480598/normal_6006b40ba2d09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_5fe645018e0f8.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/hcFgipQ/chicken_invaders_5_for_pc_download.pdfIn PDF document text
    • http://xetuwapid.iblogger.org/sigosezutimaragefexomeliz.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/ieWhfih/53480987540.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rogofideb.onlinewebshop.net/4348457034.pdfIn PDF document text
    • http://rejeremonuwiz.rf.gd/addition_equation_and_conclusion_answers.pdfIn PDF document text
    • http://biwosagamivi.myartsonline.com/ernest_hemingway_books_in_order.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_off0000d611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD611 5072 bytes
SHA-256: cd8dbfde81996c9fc596d10517b6a1b5fec71725f09723f2639657f0e617f1cd
font_01_sfnt_off0000e767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE767 10248 bytes
SHA-256: 15395c66e32daf9429b469aeabbe88131bd17312d028900e708ac9da9bd2cf1e