Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c061e73516bea2a…

MALICIOUS

PDF

79.9 KB Created: 2021-03-09 11:03:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8ce11d9a7d7543b62389076685cf2b8b SHA-1: d37ef91b74631b31c2c5f8b3c7dd4abd2abae92a SHA-256: 9c061e73516bea2a3a7fbbd647c372b89c6c151d4b9ab13f9ad7f81f8ddf060f
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and employing UTM parameters, indicative of a link farm or SEO poisoning attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/aws?utm_term=samsung+aa59-0066a+remote+codes PDF link annotation
    • https://cdn.sqhk.co/gaxozamikoge/O9hjjg4/oscar_isaac_dune_2020.pdfIn PDF document text
    • http://rkconstructionsucks.com/contract_employment_agreement_templatenq8ah.pdfIn PDF document text
    • http://jipegogujozu.22web.org/baahubali_movie_song_masstamilan.pdfIn PDF document text
    • http://jupowawixiz.iblogger.org/oxford_handbook_of_clinical_pharmacy.pdfIn PDF document text
    • http://mini-cam1.club/year_3_fractions_worksheets_printable8wgx4.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/dhbzgi3/mighty_heroes_multiplayer_pvp_card_battles_mod.pdfIn PDF document text
    • http://tosety.xyz/railway_app_downloadzt6r7.pdfIn PDF document text
    • http://parkji5x.xyz/97932739002dfng5.pdfIn PDF document text
    • http://tukameduk.22web.org/how_to_use_city_car_driving_mod_installer.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/X1jhjv8/57541262259.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/ajbPwhh/97263823650.pdfIn PDF document text
    • http://bemowasogikoj.22web.org/barikuder.pdfIn PDF document text
    • http://lakuvekavepoka.iblogger.org/suwerabupele.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/gggOBge/mabomojizovafizu.pdfIn PDF document text
    • http://lolkek.xyz/how_long_does_wahl_clippers_take_to_charge88hiz.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vaxutere.rf.gd/how_to_set_unloader_valve.pdfIn PDF document text
    • http://zogojazaje.rf.gd/putimapotowuxodi.pdfIn PDF document text
    • http://tefotesibeto.epizy.com/is_driving_license_office_open_in_karachi.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/bewagofemopajemumapogu.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/nepijolulozizizusadubejir.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/vinebofiza.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000ea36.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xEA36 12812 bytes
SHA-256: 92520b8b8de6c421fd77160d96a7d1d0b1d90dde01564fa540a448a94050f737
font_00_sfnt_off0000d61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61E 5940 bytes
SHA-256: 04c60258f354570665fa6ab27b06c25ac32a1151720359496035695f7498d507
font_02_sfnt_off00010e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9B 10348 bytes
SHA-256: 17c4fd1e69b823ae04be462fe9f1a553eb4a667a05b03a3f60c4de99f32b70d1

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