Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a4fb013ca0dfe0…

MALICIOUS

PDF

82.0 KB Created: 2021-03-23 21:41:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f9bb051f06856da7902967d835f88723 SHA-1: e3154cf0ca9b1c1b633cedf5600911fdfcc6f720 SHA-256: 92a4fb013ca0dfe03aa5f8344484a01e0fb0a1987c4575c8add419299805b5f7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs, many pointing to disposable domains, suggesting it functions as a link farm. The presence of external URIs and the overall structure indicate an attempt to redirect users to potentially malicious content, likely for phishing or malware distribution.

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://zajinet.ru/wix?keyword=nh+february+school+vacation+2020+activities PDF link annotation
    • http://nugowimabu.mywebcommunity.org/manumematovumivagajupumeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_6013c5e9ed585.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/tuzanesisogifufijewajegej.pdfIn PDF document text
    • http://suzamakulamuj.mypressonline.com/87348079236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_5fd5f04dacb6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_60368621c0931.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406806/normal_60082351c31b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_6035cda1bcb5a.pdfIn PDF document text
    • http://sutarakikim.scienceontheweb.net/the_exorcist_tv_series_season_2_watch_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fijijap.rf.gd/comparing_communism_and_socialism_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f67a9b6-fea9-4c32-b4fc-3221adc565f5/zonurasef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bad4d7b-388e-4035-b85d-2be170d4aea6/manufacturing_operations_manager_jobs_near_me.pdfIn PDF document text
    • http://lalasajunes.rf.gd/one_way_anova_example_problems_with_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26b55708-fb5b-4711-af07-6875510abf04/dijabelejidu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73c7a7dd-1e13-44a6-ac43-73d6b390e06f/vipofosogosinikopoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46b8da3b-cfb4-4c99-abbe-81f6ddf9d508/conair_steamer_handheld_review.pdfIn PDF document text
    • http://lumigetutiburu.epizy.com/error_cannot_find_module_webpack_lib_template.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 3

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_off00010522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10522 5516 bytes
SHA-256: 8b72d720a25912f13bf8e47fa2f2a7c7a0416585b282be5072144724f07cd424
font_01_sfnt_off000117f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117F2 10228 bytes
SHA-256: 3877ac4758fb0dfc75adfa96eae6b99cde9e95b3d9ca3d022b2cb27dddfbad0c

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