Malicious PDF — malware analysis report

Static analysis result for SHA-256 617d8e7c5f1e5272…

MALICIOUS

PDF

76.2 KB Created: 2021-02-25 08:00:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 88ae7b086a65e8fcd99e9d16bca5d73c SHA-1: 039a03c80ef73725e55261d06e2b097735f7051b SHA-256: 617d8e7c5f1e527266a758c0b1ca2065d13cd3ee8ff0278c1815f4df4fe994ec
136 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 as malicious by ClamAV and an ML classifier, with heuristics indicating it uses an image lure to redirect users to an SEO redirector. The primary IOC is the external URI used for redirection, which is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/wix?keyword=adobe+animate+edit+shortcuts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380079/normal_60052da46fdbc.pdfIn PDF document text
    • https://cdn.sqhk.co/fapiwejagiz/ibhagdv/kujogutetukoruz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_601c006ca5307.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/java_lang_classnotfoundexception_jasper_reports.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527747/normal_5fe5016b19cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387040/normal_6010382e6b8f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483602/normal_5fc7dcff949fa.pdfIn PDF document text
    • http://simcars.ru/what_are_the_factors_affecting_school_community_relationsk8mlq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389097/normal_601150f3ce263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413373/normal_6025a4e3ad6e8.pdfIn PDF document text
    • http://wei-nmvc.com/kebixog2efy.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/twitter_header_template_2018_psd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_5fe8372694747.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/rumoki.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/algebra_de_baldor_pagina_171_ejercicio_106_resuelto.pdfIn PDF document text
    • https://cdn.sqhk.co/jefulajidi/hjYhbJj/41071313917.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20D 5276 bytes
SHA-256: cc4f26f3917578586f47fe6c2758e4c85d35d7b55aa755b2f8c8b75aab3d9b91
font_01_sfnt_off0000f3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D5 15184 bytes
SHA-256: 4a0ef55ed1ec225a99086ab3a50709636b1ef20f84f7881c306bdd518f4d32dc

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