Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62a17c919d8c5e7…

MALICIOUS

PDF

70.2 KB Created: 2021-02-06 07:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 342da48ca84d07e39c985d05530d6f07 SHA-1: 0faf0f9fa67a079a203c9f709acf9e866d6e55c5 SHA-256: e62a17c919d8c5e78860dc612f8f480ec41328c5be10b01ba30e1d9470ce80c2
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. It contains numerous embedded URLs pointing to various domains, suggesting a link farm or redirection mechanism to distribute further payloads or conduct phishing. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags the document's structure as a non-clustered link farm on disposable hosting, reinforcing the malicious nature.

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://seumenha.ru/123?utm_term=polynomial+review+worksheet+algebra+2 PDF link annotation
    • https://cdn.sqhk.co/wafizogep/flThUaN/electronic_basketball_shot_counter.pdfIn PDF document text
    • http://bobr.space/natiwimoxojusafuridatofarrt84.pdfIn PDF document text
    • https://sukorason.weebly.com/uploads/1/3/4/5/134578332/6664526.pdfIn PDF document text
    • http://quinzsy-studio.design/91745006543nxlo5.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/5jaibhj/playbox_hd_apk_2020_ios.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/6705238.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/Vgejifr/piwamavovumonupupuwox.pdfIn PDF document text
    • https://tojemiwavujiguv.weebly.com/uploads/1/3/4/4/134468879/nikef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454691/normal_6000142c2e9c1.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/d596947b7954.pdfIn PDF document text
    • https://livugazenexaru.weebly.com/uploads/1/3/1/6/131607095/3950843.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469617/normal_60053bd70c51d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481836/normal_601762e937ab4.pdfIn PDF document text
    • http://requiremcgood.com/rarak3qgyf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407086/normal_601691fdaf16b.pdfIn PDF document text
    • https://vobulesije.weebly.com/uploads/1/3/1/8/131857334/9332165.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_off0000d4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BF 5688 bytes
SHA-256: d3e1ac578d7de78bd10745afeaedefe6f5970f0bb79d784ebbee523e09955ede
font_01_sfnt_off0000e80e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80E 10432 bytes
SHA-256: 7e1b3c9d64f49eb49bea31c3b7b9d036b4d496264e102914596d636d042f9e82

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