Malicious PDF — malware analysis report

Static analysis result for SHA-256 42f418ab9f2aa1a8…

MALICIOUS

PDF

73.2 KB Created: 2021-03-01 12:07:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 36da9022ebf6e4883ad319f8bbd482b1 SHA-1: b64bcf30097cfda83770b686365efeb20567b6cf SHA-256: 42f418ab9f2aa1a8830bfaa795ac3ca7a50abde539c482e74ccec77e7bf95377
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://jottigo.ru/123?utm_term=brown+bear+brown+bear+what+do+you+see+song+download PDF link annotation
    • https://xaxaguxoludu.weebly.com/uploads/1/3/4/5/134519627/figipuboxalogolega.pdfIn PDF document text
    • http://bimoriz.getenjoyment.net/learn_aramaic_hebrew.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/lopexonajifakepapopune.pdfIn PDF document text
    • http://health2health.online/baja_97cc_engine_carburetorcpzfb.pdfIn PDF document text
    • https://cdn.sqhk.co/fujigugi/qhihchh/mikebuwifupozumed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381105/normal_600b1ff4b2e73.pdfIn PDF document text
    • https://xidumalebuwun.weebly.com/uploads/1/3/4/8/134894794/8898f7c37048d.pdfIn PDF document text
    • https://nebemono.weebly.com/uploads/1/3/4/3/134331812/b3a46.pdfIn PDF document text
    • http://insurancesouk.com/47777140886l2uwe.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/zetagoli.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/LDVgeib/wolovimabiz.pdfIn PDF document text
    • https://vunufagedumuved.weebly.com/uploads/1/3/4/7/134740761/lesojotani-soxujabi-nozekururanefi.pdfIn PDF document text
    • http://50offit.pro/kenmore_elite_electric_range_model_790_error_codes0s9zd.pdfIn PDF document text
    • http://copyrighthelpcentral.com/what_is_the_best_starbucks_drink_to_wake_you_upb3yjm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fojakosi.atwebpages.com/remington_550-1_side_scope_mount.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_off0000e231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE231 5472 bytes
SHA-256: 576670702e6169abaa5c1e8870576b7a8d2bce603dee6edd7d54f4873ebb6993
font_01_sfnt_off0000f4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D8 10416 bytes
SHA-256: fb22469059d1535431e597e902d50fa747ab325ae509f2aba4092e2c6a399c26