Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ca1b348600a2326…

MALICIOUS

PDF

77.4 KB Created: 2021-03-16 18:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 105a7dedba0fe3547a058bf81d3a2c8a SHA-1: e1839d4cd87b819437ef2c2a2f784ee0a4e53786 SHA-256: 8ca1b348600a23261832226cd495a3ef6bb72b7885ba918cde00807cabf23d0d
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://mezovuduw.ru/award?keyword=national+geographic+magazine+pdf PDF link annotation
    • https://cdn.sqhk.co/zatovafer/geSMNhf/73953544374.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/fgfHhhh/photo_editor_macos.pdfIn PDF document text
    • http://beamorem.com/brevan_howard_master_fund_limited_annual_reportfo671.pdfIn PDF document text
    • http://usene.xyz/37515077908bvfwg.pdfIn PDF document text
    • https://cdn.sqhk.co/wokinuge/iaih4ic/salesmsg_business_text_messaging.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/gNgjngj/86457562948.pdfIn PDF document text
    • https://cdn.sqhk.co/pifizumux/bsjjogh/74803414707.pdfIn PDF document text
    • https://cdn.sqhk.co/xaderimi/chMiggh/first_horizon_bank_mobile_deposit_availability.pdfIn PDF document text
    • https://cdn.sqhk.co/gitesafuwu/fjjhdxR/lipuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/jdgciiW/pemewew.pdfIn PDF document text
    • http://betmoy56.com/gat_subject_management_sciences_mcqs_with_answerstx1gd.pdfIn PDF document text
    • https://cdn.sqhk.co/rujosupatebu/CHTiejg/bath_bomb_manufacturers_uk.pdfIn PDF document text
    • http://tpdreport.com/gusebavazemesipotunivonozzgcqz.pdfIn PDF document text
    • http://retys.space/63335083312jx6hx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jivuxo/what_are_the_advantages_of_non_conventional_sources_of_energy.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/comedy_defensive_driving_texas_test_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/312036bc-fc1b-4a0c-85e3-f6afe75ed359/sapatimori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73013677-fb0b-4a7f-9150-1ca55c8ca43b/how_to_do_your_part_in_climate_change.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_off0000f211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF211 5408 bytes
SHA-256: 2ffe658b8682c1d25b7ba3b6b0ed2cb517e7707643ba4272e98e701b085f216d
font_01_sfnt_off0001045c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045C 10980 bytes
SHA-256: 806b0c916ba4dc8df523650f253d70227bb758e3087a5f8e1841741ba7629bcc