Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14c81ef9b009f77…

MALICIOUS

PDF

73.2 KB Created: 2021-02-27 09:00:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 601fb9d0dade1c2a361158e0281f0d71 SHA-1: 1811ffb2b9a9e3b7d72e7ddaac8f353558ef7ce2 SHA-256: b14c81ef9b009f774468ab54cd0fb149c03ca5b9536580161d841b21528ed756
126 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
  • 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/award?keyword=how+to+bypass+iphone+activation+lock PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455681/normal_6003a84391afb.pdfIn PDF document text
    • https://buvefejam.weebly.com/uploads/1/3/1/4/131453018/sajunezu-gipekik-fefavo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369315/normal_5ff65889137a5.pdfIn PDF document text
    • http://tanemazijafawin.medianewsonline.com/what_does_pledge_class_president_do.pdfIn PDF document text
    • http://kujunat.medianewsonline.com/839732778.pdfIn PDF document text
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/c8c4c347cddf5.pdfIn PDF document text
    • http://pagavopalubutu.scienceontheweb.net/how_to_turn_off_zoom_g1x_four.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/72936803999.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/nozixagifoxivowakamovoku.pdfIn PDF document text
    • http://ufenmac.com/24223512613p6wh1.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/7jdVxn4/vote_for_school_president_posters.pdfIn PDF document text
    • https://budoxaku.weebly.com/uploads/1/3/0/8/130873914/3584122.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_off0000df81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF81 5344 bytes
SHA-256: 4b5b556643b96fed162066592490d6b5deebe9d3450d5bc19e370b84366d5e64
font_01_sfnt_off0000f1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C2 10588 bytes
SHA-256: fe3a3b05840362c95b240c15bc3e67c37ba2cd6a4702cdb3dd11e99ebb53857c