Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9628d3270a45405…

MALICIOUS

PDF

69.9 KB Created: 2021-03-03 21:24:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 32024a84da5a966303fb427cb7981123 SHA-1: 83e4e37324f80ec73020c9b6b4b5b2357fe3c575 SHA-256: d9628d3270a454053f8564c35e775d24fb5b888516ada3ce65610526b7d43aac
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://bologen.ru/wix?keyword=simple+and+sinister+pdf+free+download PDF link annotation
    • https://losewilim.weebly.com/uploads/1/3/4/8/134854933/nadesabelil_lumefisowaxafuz.pdfIn PDF document text
    • http://malanefire.sportsontheweb.net/simulation_with_arena_5th_edition.pdfIn PDF document text
    • http://ritegifufefut.scienceontheweb.net/estructura_del_texto_literario_wikipedia.pdfIn PDF document text
    • https://budamasut.weebly.com/uploads/1/3/4/9/134903336/0250125d15ed5.pdfIn PDF document text
    • https://xaminipa.weebly.com/uploads/1/3/1/0/131071220/gujeva.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/cosco_high_back_booster_car_seat_pink.pdfIn PDF document text
    • http://wildboost.club/comsol_particle_tracing_manualfilug.pdfIn PDF document text
    • http://dorightunion.com/xuxuwimonuroph54k7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489713/normal_5fe76be8ee1ae.pdfIn PDF document text
    • https://nuresoxak.weebly.com/uploads/1/3/1/3/131380504/2756432.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/63208971609.pdfIn PDF document text
    • http://santecmb-sarl.com/94226001923e7c4h.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/57929153527.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifovigavij.myartsonline.com/what_to_put_on_resume_for_skills.pdfIn PDF document text
    • http://sasaxunofob.atwebpages.com/biology_the_dynamics_of_life_answer_key.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_off0000d4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EF 5380 bytes
SHA-256: 1b16f89b5e998ff461e48005129e70198961b7e1baec4158db1267caa56621c1
font_01_sfnt_off0000e72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72F 10320 bytes
SHA-256: 91e1da7a8a2e744dfa2d00b44be54145ca4442cf743089e9cf94a7930553278a