Malicious PDF — malware analysis report

Static analysis result for SHA-256 82266c75b0361c85…

MALICIOUS

PDF

76.7 KB Created: 2021-02-17 01:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2f45a016a2c63460fc67f81416046db7 SHA-1: f470dcf9685d78479b3c0662fdf745ec06485e30 SHA-256: 82266c75b0361c85efdec6cc250912c8b8aff19fe49eadbabb9210300b38a159
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 detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to redirect users to external sites, with one such URL being 'https://baarspo.ru/strik?utm_term=1981+honda+cb750+value'. This URL, combined with the document body referencing '1981 honda cb750 value', indicates a lure to a potentially malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://baarspo.ru/strik?utm_term=1981+honda+cb750+value PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464878/normal_5ff9d310890e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407313/normal_5fda3bc5df47c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375342/normal_602c5036a4863.pdfIn PDF document text
    • http://masuxuxu.iblogger.org/77332270374.pdfIn PDF document text
    • https://lonitavow.weebly.com/uploads/1/3/4/3/134355974/7136646.pdfIn PDF document text
    • http://bedebatosisazov.22web.org/smsf_investment_strategy_template_ato.pdfIn PDF document text
    • https://rulotukipaka.weebly.com/uploads/1/3/0/7/130776525/dedomasavaje_jujulujudoram_jalolugidurin_wurosu.pdfIn PDF document text
    • http://boviriso.22web.org/68486345239.pdfIn PDF document text
    • https://puzepoxa.weebly.com/uploads/1/3/4/3/134318678/e2c8e5c90786.pdfIn PDF document text
    • http://nejepogiz.iblogger.org/tenths_and_hundredths_worksheets_grade_4.pdfIn PDF document text
    • https://bofubesal.weebly.com/uploads/1/3/5/9/135958810/a51c7c9b99353e.pdfIn PDF document text
    • http://dilurijarejo.22web.org/darude_sandstorm_trumpet_sheet_music.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/xojafemori/25460933825.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/kiraladodokikekun.pdfIn PDF document text
    • http://tizanuzija.epizy.com/citizen_eco_drive_skyhawk_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/kagowukarisisetelolojeni.pdfIn PDF document text
    • http://lisunamubeso.epizy.com/wudipen.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/21935565992.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/ucsf_som_absence_request_form.pdfIn PDF document text
    • http://laxaguwen.epizy.com/essay_for_ielts_general_with_answers.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 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_off0000eb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB17 5608 bytes
SHA-256: efd481c25330e8fafd194dd78276662ab8d333d732f93ec35835d04920ae841c
font_01_sfnt_off0000fe35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE35 11592 bytes
SHA-256: 17db8d7e4ad0f8ce1b89b49f6bc9209e2146c825607fecb535e69f39963c58a8

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