Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca94c83021ecb6f…

MALICIOUS

PDF

88.8 KB Created: 2021-04-27 14:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eeba94f727481476f7923633e4a8d19f SHA-1: 2b09c0aba60d798fc6ddf5f856159f1f629696e9 SHA-256: 7ca94c83021ecb6f960b45674b7547e493eec3c4a0726a5f1ca189bfc710001a
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 pointing to disposable domains, indicative of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and numerous external links are consistent with techniques used to download further payloads or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/strik?utm_term=cummins+isx+service+schedule PDF link annotation
    • http://damita.fun/survival_of_the_fittest_mtg_legality2x1n8.pdfIn PDF document text
    • http://trackengine.host/best_self_propelled_lawn_mower_2020_australia1qhi5.pdfIn PDF document text
    • http://cosmosqrab.online/contrato_de_arrendamiento_vivienda_word_mexico7l079.pdfIn PDF document text
    • http://winoraama.fun/51668413137bvtav.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/lhaJEl3/micro_battles_3_4pda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454182/normal_60274311c8de5.pdfIn PDF document text
    • http://alisabor.design/clothes_activity_worksheetk3ntw.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/25941804256.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fe1be192ae35.pdfIn PDF document text
    • https://cdn.sqhk.co/kobedobofepo/fgiiceu/cairo_club_orlando.pdfIn PDF document text
    • http://balegetiwep.mywebcommunity.org/993934906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408993/normal_604cf2753523a.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/0ia8Njf/satuvapupajepuzarunuk.pdfIn PDF document text
    • http://teachost.com/dowujuffocop.pdfIn PDF document text
    • https://cdn.sqhk.co/vabedesi/iMiMajW/janipinan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C8 4812 bytes
SHA-256: 36eea3e97848ce56c0d21873b12aaf52309aa38eaa156bea914b8aa8acc3d953
font_01_sfnt_off000122ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122EA 10976 bytes
SHA-256: d8dc5c5c08109998c618a2576dc4c9802788ae9fe409b5fa94dad510658e637a
font_02_sfnt_off00014850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14850 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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