Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b1bb42b33b01ad…

MALICIOUS

PDF

77.5 KB Created: 2021-03-01 17:18:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0f9e399e1e3e64e06f2bdd5ca7c77e2e SHA-1: 6c5b7251efa114a95f5bf08c009b5aac74ed5531 SHA-256: e9b1bb42b33b01ad06fad37ad5bbe8a5a70cded676335588894d5e3c7fcdd614
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and flagged as redirectors to malicious infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to technical support, suggesting a lure to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=brighthouse+tv+remote+not+working In PDF document text
    • http://daludaja.getenjoyment.net/whats_the_money_cheat_code_for_gta_5.pdfIn PDF document text
    • http://reawont.online/how_to_change_screen_resolution_on_samsung_galaxy_tab_s62y8jg.pdfIn PDF document text
    • http://borejukeluteva.mygamesonline.org/what_is_diverse_learning_materials.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377925/normal_5fe244fc33891.pdfIn PDF document text
    • http://luxomozuk.mypressonline.com/tratado_elemental_del_derecho_romano_eugene_petit_resumen.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/percy_jackson_film_online_cz_titulky.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/88948878799.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404297/normal_602662cd68c78.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/biblia_de_estudio_arcoiris_reina_valera.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/boy_scouts_popcorn_order_form_2019.pdfIn PDF document text
    • http://mavitrade.com/24279933062drrei.pdfIn PDF document text
    • http://zuregazezoral.mygamesonline.org/dorumurorepefu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379742/normal_6021b9d28931b.pdfIn PDF document text
    • http://ig-copyrightviolation.com/food_photography_books_amazonlrtoj.pdfIn PDF document text
    • http://bagesopabiwub.scienceontheweb.net/bejafo.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/sakevazetivetuxizagosojep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fumiposamisur/wijoribagabibaromomarid.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/hhv_solar_panel_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/terraria_android_full.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/22608168569.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F1 5004 bytes
SHA-256: 5510dc86c95a64acaabd722eff104faa29191a990983ece1e6aa083479acabf4
font_01_sfnt_off0000f5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5ED 10724 bytes
SHA-256: 21d63941feb4690148b8b708fdd7738b21b2de77559b5c27b4c400748be3ac42
font_02_sfnt_off00011a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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