Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4296c0fa15afb7…

MALICIOUS

PDF

76.9 KB Created: 2021-02-14 11:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2a310f5cc9ad7c244389ef8f1c500469 SHA-1: f3d2b2fe1ce756a40a3dce1e31e122e2c637f14f SHA-256: 6f4296c0fa15afb72dc654ebd84f11994a2611fde883edd4a0528b5bfc89b6d1
204 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirectors and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to downloading a file. The presence of embedded URLs and the overall structure indicate an attempt to redirect the user to malicious infrastructure, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://yafferge.ru/123?utm_term=how+to+fix+a+broken+heart+pdf+download In PDF document text
    • https://cdn.sqhk.co/ruwonumatag/f5MUjhk/qr_code_scanner_android_app_download.pdfIn PDF document text
    • https://wegonugu.weebly.com/uploads/1/3/4/0/134040733/d9a06fe.pdfIn PDF document text
    • https://tuwoganerolet.weebly.com/uploads/1/3/4/6/134631505/pibukefu.pdfIn PDF document text
    • https://tijesefufejeje.weebly.com/uploads/1/3/4/8/134858706/8126230.pdfIn PDF document text
    • https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/muxane.pdfIn PDF document text
    • https://maninuwag.weebly.com/uploads/1/3/4/5/134577581/6520687.pdfIn PDF document text
    • http://onlinekartiadesi.com/91415178180uqa5c.pdfIn PDF document text
    • https://fikakexuk.weebly.com/uploads/1/3/0/7/130775276/13f407482.pdfIn PDF document text
    • http://cosmosqrab.online/relatorio_de_auditoria_externaq0sf5.pdfIn PDF document text
    • https://tixanesel.weebly.com/uploads/1/3/4/2/134234664/7994241.pdfIn PDF document text
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/jugegi-deduxe-torem-nuvumokod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nufewaruxemo.epizy.com/job_biodata.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/adobe_illustrator_draw_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/free_education_worksheets_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/murarotigofagin.pdfIn PDF document text
    • http://vomifavub.epizy.com/52618554326.pdfIn PDF document text
    • http://jefusebu.epizy.com/codingbat_python_list_1_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1A 5276 bytes
SHA-256: 267bbdcd847111d833dc6704c0d1c5ff1b2ca6b5139faed0442a3939fe9e6e9f
font_01_sfnt_off00010110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10110 11108 bytes
SHA-256: 02bac4e8be413975483060c1eb952732b1f2a64e26ac48cb41962395aa1d31dd

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