Malicious PDF — malware analysis report

Static analysis result for SHA-256 8876053297bafaa5…

MALICIOUS

PDF

72.2 KB Created: 2021-03-02 12:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 30e32b741df98f653730364d05c02716 SHA-1: 4c1fae9be1cedd40c5c944329b89f923b0dc9d61 SHA-256: 8876053297bafaa5d02722747cf241e4bb67d2e16fdf6dd17fbe6c3833eda4c0
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://dafemum.ru/wix?keyword=expert+grill+wireless+grilling+thermometer+manual In PDF document text
    • http://gixelube.iblogger.org/kekusuvezevexesinagope.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463554/normal_603440f2a1f28.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/13027105356.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/bAhfic2/alphazero_vs_stockfish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_602141850fdc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392218/normal_6014bd08535eb.pdfIn PDF document text
    • http://desokore.medianewsonline.com/specific_heat_practice_problems_with_answers.pdfIn PDF document text
    • https://maraliva.weebly.com/uploads/1/3/2/7/132712127/tuliwake-dugaz-xujas.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/how_to_change_pump_belt_on_bissell_proheat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419206/normal_602da0cf4260e.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/jefixotipijajojiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501029/normal_5fe24d57c753c.pdfIn PDF document text
    • http://juwolopuga.66ghz.com/jovutozumazowakegikupom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sanugifop.atwebpages.com/daput.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_off0000de9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9B 5352 bytes
SHA-256: ebceb8ef53e0345bd55b913f03f56df2178c7beb4b7374cd9a2c104d0e833670
font_01_sfnt_off0000f0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BD 10140 bytes
SHA-256: 55f63d76bf10da08bb6fe09bf1e8a895bfe80c64f45c37cdf6bed8f0d43eddde