Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3f2712de5b5a3a9…

MALICIOUS

PDF

72.5 KB Created: 2021-02-25 09:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2bf1e28795c76c8767d8b4c8b3567b37 SHA-1: d6c71d6e9faed72d66413f9cb62199306d9f81c0 SHA-256: f3f2712de5b5a3a941bd2a973301e70857a1bcda0bfebbc59cbf7c2df8ad00b3
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=2003+honda+rancher+350+performance+parts In PDF document text
    • https://cdn.sqhk.co/jakufomego/dFijjdh/piano_lessons_near_me_online.pdfIn PDF document text
    • http://duvikerogene.iblogger.org/how_to_stretch_for_karate.pdfIn PDF document text
    • http://phtech.site/fajalefomawasaluturosaruol7ko.pdfIn PDF document text
    • http://esmoney.site/gafivf01qh.pdfIn PDF document text
    • http://medway24.com/369141628444iyym.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/gjaifPD/tujupugasofavolajemekipi.pdfIn PDF document text
    • http://repair-planshetov.ru/airscreen_on_firestickqm1m9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446401/normal_603143fe7597c.pdfIn PDF document text
    • http://good-production18.site/183216656183flom.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/EgjgcrR/yes_that_dress_download.pdfIn PDF document text
    • https://cdn.sqhk.co/waladoved/ngGidQF/adventure_ball_download.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/2006_harley_davidson_sportster_1200_custom_service_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wazuvit.rf.gd/ames_performance_forum.pdfIn PDF document text
    • http://fusifovizit.rf.gd/37924653855.pdfIn PDF document text
    • http://diwiludoki.rf.gd/arcane_quest_legends_full_apk_mod.pdfIn PDF document text
    • http://bojivudotafaf.epizy.com/vetapiwuxewarodafixodan.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_off0000db14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB14 5832 bytes
SHA-256: ec5b7cacd39302ddb8a28c1b60fd74302d5433ed08d6266a92469b9fd90f4f6a
font_01_sfnt_off0000eec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC2 11212 bytes
SHA-256: 2dc44c8c0edde9e1fad1bc6272f1c10cd575bbef45b8a55d7495e99d9ebb4265