Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b4eec41d42593ca…

MALICIOUS

PDF

62.9 KB Created: 2021-02-22 02:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8f8689b463c88524e4eb287811716a50 SHA-1: c56c36344181705087dd61512a0442f11d696c29 SHA-256: 7b4eec41d42593ca075cb7d5e08bc342335ac2f4d97092e4116e0253606c5107
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to external websites, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous suspicious URLs points to a link-farming or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8766

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=are+tecumseh+motors+good In PDF document text
    • https://rupuleda.weebly.com/uploads/1/3/6/0/136002844/videtu_satunitaxew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_601295c46be48.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/kunosuwurusez_wigutikuvajuwu_memipiguxususiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487623/normal_5fe15171466ef.pdfIn PDF document text
    • http://successinyourlif.website/22845569263dr2xc.pdfIn PDF document text
    • http://smartcoin.design/assam_women_s_university_admission_form35obf.pdfIn PDF document text
    • http://golosa-spasibo.ru/bikefudovobifudezefuburozwjbvm.pdfIn PDF document text
    • https://nukanepinax.weebly.com/uploads/1/3/1/4/131454046/wotos-serivukir-gekagiburipu-fikufuf.pdfIn PDF document text
    • https://vufagejibuto.weebly.com/uploads/1/3/1/4/131483336/5567670.pdfIn PDF document text
    • http://kigetivizaru.epizy.com/risk_management_process_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/wigesidagawatisom.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/nabojonubiwiditasuji.pdfIn PDF document text

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