Malicious PDF — malware analysis report

Static analysis result for SHA-256 61eeb88866b6f086…

MALICIOUS

PDF

78.5 KB Created: 2021-01-23 22:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 61c52452933b8a662a8cf41a8c97945c SHA-1: 06da9ad824fd0568e0006871c4831fef5872b762 SHA-256: 61eeb88866b6f086773795e2f3242e0a3157f204d726a2a06f832814c0f58dee
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 flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Numerous external URLs are embedded within the document, suggesting a link farm designed to redirect users to potentially harmful sites. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.

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://trafftec.ru/123?utm_term=king+for+a+day+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487194/normal_600ba27e2157e.pdfIn PDF document text
    • https://cdn.sqhk.co/sezogitov/cJjihqR/48190264663.pdfIn PDF document text
    • http://zupubovogigu.iblogger.org/fullscreen_activity_android_kotlin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463807/normal_5fecb4f85e3ce.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/pusatawedise.pdfIn PDF document text
    • https://site-1177693.mozfiles.com/files/1177693/baahubali_songs_naa_songs__com.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/gehjnCC/heart_gold_pokedex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402932/normal_5fcc958601f9d.pdfIn PDF document text
    • https://site-1180896.mozfiles.com/files/1180896/41311804631.pdfIn PDF document text
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/6291346.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/3jehihi/xidunurawinetos.pdfIn PDF document text
    • http://banoduber.iblogger.org/kevanenakekirokegazoz.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/iiBjcgj/jefonixezotokenoxalu.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/vagekufebon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tesalivolanimeg.rf.gd/72257751837.pdfIn PDF document text
    • http://kovoxajinuf.epizy.com/83074321007.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_off0000f47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47E 5260 bytes
SHA-256: 9cec377a06c7d6fa02bba028d810d40acb1eacc387227a7f0bc44338329a0629
font_01_sfnt_off00010687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10687 11420 bytes
SHA-256: 223dc3ca2f9b90f6f5604ee20c8e4f2852c56d9c4d9abc155edd7a3cc8e88703

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