Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3daabb09a6b0e3e…

MALICIOUS

PDF

76.7 KB Created: 2021-02-25 15:49:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 760cdc70c0665c5715ebd5462beca354 SHA-1: 209b7b904d3c8b70d88ff2792f5e8784a006a794 SHA-256: f3daabb09a6b0e3e1f22c9dbfa303f49769b06324e192de7d4a1094259c8182a
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The presence of external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly support this attack pattern.

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
  • 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://bologen.ru/wix?keyword=william+van+der+woodsen PDF link annotation
    • http://buxewufa.iblogger.org/revenidovagavikafusolefix.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/fobidiso.pdfIn PDF document text
    • http://torarofuzavu.22web.org/92834263777.pdfIn PDF document text
    • http://lupuneruw.iblogger.org/1st_year_books.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/mazijatixerolatam.pdfIn PDF document text
    • http://bt-management.website/97679405021ocffy.pdfIn PDF document text
    • http://tizakeguwowil.22web.org/rawulekabosaxe.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/vupigezotitewapaziwisugu.pdfIn PDF document text
    • http://alisaborodaenko.design/56596912941ghhzk.pdfIn PDF document text
    • http://sportplays.ru/scuf_gaming_custom_xbox_controllerkcszz.pdfIn PDF document text
    • http://positarinirib.22web.org/driver_beats_audio_hp_envy_15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gijomifede.rf.gd/laboratorio_informatica_studi_umanistici_unimi.pdfIn PDF document text
    • http://duwagisu.epizy.com/proform_cardio_hiit_trainer_assembly_video.pdfIn PDF document text
    • http://tosaxope.rf.gd/29614500120.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/28132141287.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/nikon_p5100_dpreview.pdfIn PDF document text
    • http://wetavirevamo.epizy.com/consulting_engineers_ontario_fee_guideline.pdfIn PDF document text
    • http://bitines.myartsonline.com/the_paper_menagerie_and_other_stories_kindle.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/game_bomb_it_kart_racer.pdfIn PDF document text
    • http://gumomexad.onlinewebshop.net/gogedumunizunodaled.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_off0000eedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDC 5136 bytes
SHA-256: 4ddba41e5e5aaf5362f35f6e845ecebf6fc45244d43b8d07234e17dfee18d847
font_01_sfnt_off0001005a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005A 10880 bytes
SHA-256: 6b30a1e28309d19a82edc0d8b6f8a3e93d07ae9e56f86994c82f35c8d416cbb2

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