Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb3207b6cab625f…

MALICIOUS

PDF

87.4 KB Created: 2021-03-14 19:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f9c2a5d5e1d54a6012be8f7c321a710c SHA-1: 7632fae061763fe0258cc6a509825a109f4f305e SHA-256: cdb3207b6cab625f981f7d361f9b97ca25da2f8a3fbfb1bf8a5d814a72cac9ce
126 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded external links, suggesting a link farm or SEO spamming operation. The primary link points to a URL that appears to be a search query for a manual, potentially a lure. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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://jumiwimov.ru/wix?keyword=petsafe+deluxe+in+ground+fence+manual PDF link annotation
    • http://latibonega.iblogger.org/moxenijidi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476954/normal_60047b622eefd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377100/normal_604d4770d7ac7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413110/normal_600e5e9770e71.pdfIn PDF document text
    • https://kotutoxegaru.weebly.com/uploads/1/3/2/6/132695780/5564089.pdfIn PDF document text
    • https://xudujebu.weebly.com/uploads/1/3/6/0/136090205/novifanawubobirez.pdfIn PDF document text
    • https://gekubunog.weebly.com/uploads/1/3/4/2/134235395/gekoperavorokisu.pdfIn PDF document text
    • https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/sawagekapifeleg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387430/normal_5ff65b306b24a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455377/normal_5fd04021928c1.pdfIn PDF document text
    • https://kezobonuduwu.weebly.com/uploads/1/3/4/4/134457579/rejulegemunibovokubo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489415/normal_60436a7ed8c5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5fd3a0fd11200.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443802/normal_5ff9c5a0846dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://869e45c2-9c2d-410b-ad52-4d3411d41339.filesusr.com/ugd/73bd41_2730ed92d93346618a9385a4911388a8.pdf?index=trueIn PDF document text
    • https://fa53e508-d88d-41cb-897c-7a5b6f1bfcc3.filesusr.com/ugd/361045_21685b8f755a4ea380caacfeff812e25.pdf?index=trueIn PDF document text
    • https://efa91360-7c21-416c-9d60-3189e0beb381.filesusr.com/ugd/42ffc7_41cbeac01eb346b99d1e4d127d5ed14f.pdf?index=trueIn PDF document text
    • https://c46c713f-5e69-4c64-aad4-d86f29440f76.filesusr.com/ugd/957c7b_20583deebd3d40128873520ece8012c6.pdf?index=trueIn PDF document text
    • https://3c2b787d-8465-4662-bdcc-bf736d584291.filesusr.com/ugd/8760e7_5a4cb420cf3843088f7372ba1cf9b81c.pdf?index=trueIn PDF document text
    • https://f72b89be-0fa6-41ee-8162-331329ef78ce.filesusr.com/ugd/95089d_dffe582f26da4d1dac7de3618219467d.pdf?index=trueIn PDF document text
    • https://972af30b-04c2-4618-b911-83ba0b7fef9e.filesusr.com/ugd/84a5c6_9563c6ebe97644a2bf14e1a2b612092e.pdf?index=trueIn PDF document text
    • http://tejugezefufuli.rf.gd/jaxitejetekux.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_off0001171f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171F 5412 bytes
SHA-256: 2fc990ad4b86671b548115f2427ac86d6cf5e45780c7f42648befb23c6e3a66a
font_01_sfnt_off00012978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12978 11280 bytes
SHA-256: 9d86d9456af8cbc9656bf1ce5dc5a9c58ed766c5d07fb12e7f8e1ae1e178e23f