Malicious PDF — malware analysis report

Static analysis result for SHA-256 38afec4f11530ca6…

MALICIOUS

PDF

73.8 KB Created: 2021-02-28 10:33:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0b68f6211606c5b0094e3f587d929321 SHA-1: f22e1bf23db3c9c421038eb7a9dc83026707f89e SHA-256: 38afec4f11530ca66fb98602be4608b9e31caaa87a3e5dc4fe5d86e74f1e881c
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, with one specifically identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

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://kuzutuzo.ru/award?keyword=are+mini+trucks+legal+in+california PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484997/normal_600f42cc66e66.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/ftojhie/sweet_fruit_candy_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/eieHHhf/solar_system_super_simple_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/zobarimumuje/ajhHjbI/european_luxury_cars_mod_apk_unlimited_money.pdfIn PDF document text
    • https://volinamonapefez.weebly.com/uploads/1/3/4/4/134494747/2593cfbbadb52f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495854/normal_602e2b703e2f2.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/g-shock_rangeman_gw-9400-1.pdfIn PDF document text
    • https://jitebemaduk.weebly.com/uploads/1/3/4/6/134692965/b074cd9835.pdfIn PDF document text
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/desoxoridija_fetomilurudede_keviroruja_fanoki.pdfIn PDF document text
    • https://dinomorozowi.weebly.com/uploads/1/3/4/6/134610364/kulovutiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wajibile/carnivores_ice_age_apk_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/81568208826.pdfIn PDF document text
    • http://dikuwunoxoxa.epizy.com/photograph_fingerstyle_free_tabs.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/free_funny_christmas_party_invitation_templates.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_off0000e393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE393 5252 bytes
SHA-256: 69220e212577b57784d5ea8dd6c67c1d20b8ea94f2e5747678a6515d51bcef52
font_01_sfnt_off0000f560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF560 10704 bytes
SHA-256: d8eeaecee9287be2e239eff53cb855e1dae91c587312412a7d23474ef8efa4f7

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