Malicious PDF — malware analysis report

Static analysis result for SHA-256 32581af1f281e320…

MALICIOUS

PDF

69.6 KB Created: 2021-02-08 08:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c404b06080d37700fea28eecd9aa3b3a SHA-1: f0fddfc622f08800b175d6a709b91eb98251fa17 SHA-256: 32581af1f281e3200f9363335c16a2da4a880b44d24b2b2daa96931bf63707d9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting services, suggesting a link farm designed to redirect users to malicious content. The document's structure and embedded links strongly suggest it is part of a phishing or malware distribution campaign.

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://jottigo.ru/123?utm_term=universe+the+inner+planets+worksheet+answers PDF link annotation
    • https://xawawamofolapus.weebly.com/uploads/1/3/1/4/131436997/1190281.pdfIn PDF document text
    • https://wezusutuxalik.weebly.com/uploads/1/3/1/6/131637092/ligaduned.pdfIn PDF document text
    • https://pulapafux.weebly.com/uploads/1/3/0/8/130874232/a4a28b89.pdfIn PDF document text
    • http://axacheat4.xyz/99535474350h3tz2.pdfIn PDF document text
    • https://dunokosira.weebly.com/uploads/1/3/5/3/135349308/6705343.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/popular_kpop_dances_2019ywyfb.pdfIn PDF document text
    • https://cdn.sqhk.co/terisuzuji/jiifjbR/miwiler.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuwutitaw/hhYjcPZ/wenuvefogolejegotizafu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426063/normal_5fdd8e403d59c.pdfIn PDF document text
    • http://tb-films.ru/67170895706npek4.pdfIn PDF document text
    • http://mushygushysayings.com/46728297942xn24b.pdfIn PDF document text
    • http://freehookup.xyz/fafoxuledanubuvukogoht2.pdfIn PDF document text
    • http://mazanatur.space/post_operative_instructions_for_crown_prep4vtkf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379032/normal_5ff76ac099395.pdfIn PDF document text
    • http://triple-doska6.club/sirozafijepiwimose1t3cn.pdfIn PDF document text
    • http://axacheat4.xyz/apologia_advanced_biology_module_10_study_guide4lu9o.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/jefazaxal/bekhayali_video_song_female_version.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/android_8._1_samsung_note_9.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_off0000d4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E7 5112 bytes
SHA-256: 73e17009769d78cfe8b50dc81787ff0f2440a979fc857001de26a2bdd92a5f8a
font_01_sfnt_off0000e661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE661 10148 bytes
SHA-256: 2cc389d22837798ff722dec8821a1ae537e6c2f02df34422b693ec82b2bac7bc

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