Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da6e47a9f0fc0a9…

MALICIOUS

PDF

73.7 KB Created: 2021-02-26 11:20:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7baf1d9fcd65e7b1efb1609ba7766290 SHA-1: 210768d0ef9bebdc77bf142f6f03da806eefe8b1 SHA-256: 3da6e47a9f0fc0a92f30abd4596e1d9085b408c49b473769210ce5e8f233831d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, many of which point to disposable or suspicious domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt 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://jumiwimov.ru/wix?keyword=sing+unburied+sing+book+pdf PDF link annotation
    • https://cdn.sqhk.co/nawakema/jgCuXhh/jobolutuvodugozinivubiwij.pdfIn PDF document text
    • http://businessoutsourcing.org/how_can_i_learn_to_tattoo_at_home64jjz.pdfIn PDF document text
    • http://ekzo-fruit.ru/85375518515039nx.pdfIn PDF document text
    • http://sport-stavki.fun/27844406731dwmx8.pdfIn PDF document text
    • http://replyua.site/polaroid_premium_white_mailing_labels_templatedak9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393358/normal_6008ab0a85e45.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/ladojenefe/72318751139.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/c._g_police_form_2018.pdfIn PDF document text
    • http://pivujumurabaf.epizy.com/dieta_pobre_en_purinas.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/vivoda.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/daewoo_ac_error_codes.pdfIn PDF document text
    • http://xaviwawav.epizy.com/xibutifipebabape.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_off0000e715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE715 5276 bytes
SHA-256: c0cba13d267215cbe0ed1577eb34a4537a5b03b7a878ee5928956341d038d463
font_01_sfnt_off0000f914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF914 9636 bytes
SHA-256: 26c290c749ce321f47b12fc16ebc55bcf8ebca007064b8355ea2b177f321a8f3

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