Malicious PDF — malware analysis report

Static analysis result for SHA-256 22eee525281cbd29…

MALICIOUS

PDF

68.3 KB Created: 2021-02-26 06:54:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8cb11aa36e3f59412562ee7785cbc772 SHA-1: c9161aeed4543be051cda0f60c8c58e6a17ec1ac SHA-256: 22eee525281cbd29659c5993ce93398d0fde2c05bcfe6537c0f57895fd9d93fc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable domains and are likely used to host malicious content or redirect users to phishing sites. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a large number of links on disposable hosting, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://leonvi.ru/award?keyword=binding+the+strongman+over+america+pdf PDF link annotation
    • http://bawazofo.getenjoyment.net/tortilla_flats_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369901/normal_5ff7c3d2ebade.pdfIn PDF document text
    • http://molotkov.site/82020206345eesod.pdfIn PDF document text
    • http://profaudit32.ru/aflete_fitness_guidesdbd30.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/n4zjbod/free_kicks_soccer_games.pdfIn PDF document text
    • https://cdn.sqhk.co/zedozomi/ghggDha/sudoku_easy_puzzle_printable.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/what_is_the_most_classical_theories_of_crime_causation.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/82448532982.pdfIn PDF document text
    • http://trackengine.host/accounting_entries_in_sap_erp_controlling2vvia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387232/normal_60023819296dd.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/amumu_jgl_guide_s9.pdfIn PDF document text
    • http://popularchoice.space/que_es_un_desorden_alimenticiomtreq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tefetuzuzip.myartsonline.com/asus_motherboard_sabertooth_990fx_r2.0_drivers.pdfIn PDF document text
    • http://zekipiwozuse.epizy.com/41355792412.pdfIn PDF document text
    • http://kaloruligot.onlinewebshop.net/communist_manifesto_book.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/37121691875.pdfIn PDF document text
    • http://worifazitinel.rf.gd/buoyweather_app_for_android.pdfIn PDF document text
    • http://wujuxupizosafe.rf.gd/realidades_1_capitulo_4a_actividad_12_answers.pdfIn PDF document text
    • http://wufagezigedo.onlinewebshop.net/23961843053.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_off0000cd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD94 5644 bytes
SHA-256: 0c5403ded461fbddbb3e3fbc90e13e68cac43ddcf0343620941d295cad8db25f
font_01_sfnt_off0000e0ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AB 10432 bytes
SHA-256: bbaf9853a1ac363ae7f1282ec9370ced93b9452c95e0d67c7ee7fa8a501d7dbd

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