Malicious PDF — malware analysis report

Static analysis result for SHA-256 921946b445f336d7…

MALICIOUS

PDF

77.0 KB Created: 2021-03-01 00:02:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fada6e646f58596f091be461c285a56d SHA-1: 9ca94367d76e67cc88a6953adeee078df7ff67a4 SHA-256: 921946b445f336d7bd82c5b49f19524ca318d0d029d0854bdf21e03f0e222426
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, characteristic of a link farm designed to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/award?keyword=strongest+starfleet+ship PDF link annotation
    • http://summerita.fun/tableros_de_juegos_de_mesa_para_imprcq19u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408596/normal_600c8f0e328bc.pdfIn PDF document text
    • http://tideparipawovu.mygamesonline.org/diferencia_entre_el_destino_manifiesto_y_la_doctrina_monroe.pdfIn PDF document text
    • http://tevfikyuce.xyz/the_captive_lady_summaryr81at.pdfIn PDF document text
    • https://kojivijagidisu.weebly.com/uploads/1/3/4/0/134042347/5cff80f6420b30a.pdfIn PDF document text
    • http://buwubaled.mywebcommunity.org/sesuvotogij.pdfIn PDF document text
    • http://tifizifojaf.iblogger.org/pojapefu.pdfIn PDF document text
    • http://microdigitalmeter.xyz/anthem_pc_game_full_version6hpwq.pdfIn PDF document text
    • https://cdn.sqhk.co/gazamara/iWV5hTT/44782467914.pdfIn PDF document text
    • http://rineset.xyz/dabanivobemezix7ivc0.pdfIn PDF document text
    • http://nitiwopororotef.mypressonline.com/how_to_program_my_directv_genie_remote_to_my_vizio_tv.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
    • http://lijowavatajo.myartsonline.com/xodigateziriviko.pdfIn PDF document text
    • http://vurisadazuxe.epizy.com/working_principle_of_abrasive_jet_machining.pdfIn PDF document text
    • http://gaxomin.rf.gd/activation_lock_bypass_removal_tool.pdfIn PDF document text
    • http://nijugatujoz.rf.gd/asme_section_ix_free.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_off0000e372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE372 5056 bytes
SHA-256: 86fa55af7606117a8197ac6109ad7c2c55f328eab355820e55dcb122b347ce07
font_01_sfnt_off0000f48d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48D 10712 bytes
SHA-256: 261968d6842ef088ffc776762e484a75d857a91909497de4c2e17f10de9ea2c0
font_02_sfnt_off00011942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11942 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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