Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e75088f7916002…

MALICIOUS

PDF

75.1 KB Created: 2021-04-04 04:14:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c7e78677f8360327b773dc49aa82d9f4 SHA-1: 20969852f86a8cb60c4e3940869037ab8b48487e SHA-256: 31e75088f7916002b3b92131320f1684a86524e767d5b3ee0bf0a46eecb22480
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious. It contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The PDF's structure and embedded URIs indicate it is designed to redirect users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/award?keyword=book+of+esther+kjv+pdf PDF link annotation
    • https://mitixomog.weebly.com/uploads/1/3/4/8/134859124/josad.pdfIn PDF document text
    • http://vixemifojetinag.sportsontheweb.net/die_buddenbrooks_buch.pdfIn PDF document text
    • https://tabowemonikose.weebly.com/uploads/1/3/5/9/135957185/3dc1083bffcc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489975/normal_5ff95e30a1835.pdfIn PDF document text
    • https://vagapirub.weebly.com/uploads/1/3/4/6/134648019/rolunapam_lifudet.pdfIn PDF document text
    • http://themarkuzmusic.com/detabituxemujevotul2759n.pdfIn PDF document text
    • https://vominitaxa.weebly.com/uploads/1/3/4/6/134677623/lebubatugum.pdfIn PDF document text
    • https://gekonoxare.weebly.com/uploads/1/3/4/4/134480638/gosasabagur-gexomaxul-befexunarexi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414498/normal_6054475318453.pdfIn PDF document text
    • http://sibuvre.com/zamogirijutewawozaribiwuvt7kmd.pdfIn PDF document text
    • http://g2am2e.xyz/tazokumadosepv3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454681/normal_5ffbc64453cfb.pdfIn PDF document text
    • http://bitoxifa.sportsontheweb.net/certificato_di_residenza_autocertificazione.pdfIn PDF document text
    • http://xidotamasaw.22web.org/formule_excel_arrondi_entier_inferieur.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/norcold_refrigerator_quit_working.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tujiritam.epizy.com/putivukijatapititepojizux.pdfIn PDF document text
    • http://fefadipif.rf.gd/crise_asma_tratamento.pdfIn PDF document text
    • http://vutogebufuz.myartsonline.com/3554899632.pdfIn PDF document text
    • http://puxalalofevan.rf.gd/36977387095.pdfIn PDF document text
    • http://suregemebibu.rf.gd/logical_reasoning_questions_and_answers_for_class_5.pdfIn PDF document text
    • http://tadiwolavis.epizy.com/como_hacer_manualidades_con_botellas_de_gaseosa.pdfIn PDF document text
    • http://dakunexafabeve.epizy.com/7862045475.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA17 5136 bytes
SHA-256: 4eb018131b2023d49439fb162d4267b571ff9a3548f01f408a51f15a2209ac1f
font_01_sfnt_off0000fba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA3 10460 bytes
SHA-256: 951072b4eb56e088b2387d2453201e1f1967890d21b4aab355e8be2177868e78

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