Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb594b949b4e6cb7…

MALICIOUS

PDF

67.6 KB Created: 2021-02-28 16:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 981d5049fd9df59e79da6102437f071b SHA-1: 83944ca52b58c14bae340a07cbcd7ebdb4492085 SHA-256: bb594b949b4e6cb7c32283f8ab0eabfe20a04f1e48c292ea3e7f716d3d9ccc66
226 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document is classified as malicious and exhibits characteristics of a phishing lure, specifically designed to harvest credentials or abuse multi-factor authentication. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm intended to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving exploitation or redirection to a phishing kit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://botokaw.ru/strik?utm_term=how+to+connect+brother+printer+to+wifi+mobile PDF link annotation
    • http://buwovavozu.getenjoyment.net/what_is_the_school_management_committee.pdfIn PDF document text
    • https://fedonofawok.weebly.com/uploads/1/3/4/8/134881994/gevajelosipe_gureva_wukexetamasep.pdfIn PDF document text
    • https://cdn.sqhk.co/widafopaj/bEFjhjb/79928099793.pdfIn PDF document text
    • https://xujuwoxevosu.weebly.com/uploads/1/3/4/8/134896670/dofajekuxum.pdfIn PDF document text
    • https://povurumupun.weebly.com/uploads/1/3/4/8/134884194/4615631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481699/normal_60292576d6474.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/heFgeiY/led_control_box_12v.pdfIn PDF document text
    • https://cdn.sqhk.co/pevedapev/glZEgfK/gem_miner_dig_deeper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419847/normal_5fefec40b1876.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/nogosu.pdfIn PDF document text
    • https://juzolafer.weebly.com/uploads/1/3/4/3/134382033/9783623.pdfIn PDF document text
    • https://fuxakitedev.weebly.com/uploads/1/3/5/4/135400966/6140952.pdfIn PDF document text
    • https://babexunerasosib.weebly.com/uploads/1/3/4/6/134620176/5c2777016e80e9.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/gbSgfif/ryans_world_bubble_shooter_game_download.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/gagagakigibapo/how_to_get_approved_for_chick_fil_a_franchise.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/employee_guidebook_template.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_off0000ce13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE13 5060 bytes
SHA-256: 12704748af69964f794286b19c7a8fdb793072c93510b591349f0a1bbece1740
font_01_sfnt_off0000df30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF30 9940 bytes
SHA-256: 5cf5b19becda0c1e2488f5de0119e355de7c23179ea52008bcc6b0b2dd07fe67

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