Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8ffd363e777aae…

MALICIOUS

PDF

118.6 KB Created: 2021-02-27 01:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d23ba893ede579e1a45e80a790a30e52 SHA-1: 5d127c8d7b6b4548ef0f75af699c6e4c1e216f0d SHA-256: 2c8ffd363e777aaeaaeeaab3caa3ede98f142bf515ca2b789e219f5d6c009b99
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://yafferge.ru/wix?keyword=mole+calculations+worksheet+a+level In PDF document text
    • http://likedizar.medianewsonline.com/what_to_do_when_a_boiler_stops_working.pdfIn PDF document text
    • https://cdn.sqhk.co/vigibizez/hfggt6s/is_there_a_personal_assistant_app_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/PpIicTQ/vurefutorefakiligodiba.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/walt_disney_world_schedule_2021.pdfIn PDF document text
    • https://cdn.sqhk.co/razotefo/fOjgOeI/heritage_auctions_comics.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/84597726661.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/65171539598.pdfIn PDF document text
    • http://kakorixow.mygamesonline.org/what_are_some_examples_of_biotic_factors_in_an_ecosystem.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/jKdibpT/89376316475.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/probability_and_statistics_textbook_slader.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/sujizovuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mimosomudex.rf.gd/hernia_hiatal_nutricion.pdfIn PDF document text
    • http://resilasijajatil.myartsonline.com/lg_g_vista_price_in_ghana.pdfIn PDF document text
    • http://pugagewuda.rf.gd/android_pay_not_available_in_your_country.pdfIn PDF document text
    • http://nimoxorud.epizy.com/51462693275.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_off000194bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x194BF 5108 bytes
SHA-256: cc6b4c5ac61d6bc4c36c77dcc6477addc07f3924879faefcd0dbfac2783655d3
font_01_sfnt_off0001a63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A63A 11332 bytes
SHA-256: 7df34f2c4f18b4109690deb4258f4924369c1f6322c8994cc3fbf4cc7d35e056