Malicious PDF — malware analysis report

Static analysis result for SHA-256 96408dc0b712dbdb…

MALICIOUS

PDF

45.7 KB Created: 2020-11-07 21:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 6600b4be295e0a9e91e1c6c2a7a73e34 SHA-1: c8a1d247d12324f62b476aa87d73065ed16bc4c7 SHA-256: 96408dc0b712dbdb3afe2194e3e6a2cc4c37581ac62025a004e6a9a2232479db
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/tezulejosolula_nilavasivaxisaf.pdf.
  • 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.
  • 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://traffking.ru/aws?keyword=watch+cartoons+online+tv+franklin In PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/tezulejosolula_nilavasivaxisaf.pdfIn PDF document text
    • https://livaganomin.weebly.com/uploads/1/3/4/3/134399079/d389e62cc6.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f97cf04ce5de.pdfIn PDF document text
    • https://wuxotiwor.weebly.com/uploads/1/3/4/3/134335057/fe41d72268bdfbd.pdfIn PDF document text
    • https://lepitosamodovax.weebly.com/uploads/1/3/4/3/134335454/5599319.pdfIn PDF document text
    • https://xifepifedezuz.weebly.com/uploads/1/3/4/4/134495844/4efeff128b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413866/normal_5f94f41bd925f.pdfIn PDF document text
    • https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/7529633.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/9b924f.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/603541.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/gowozizememefi_golotetezel_kuratibipupi_desal.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/f33a33bf1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462986/normal_5fa2958689292.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gorujugiximu.files.wordpress.com/2020/11/karipevo.pdfIn PDF document text
    • https://rupuxijod.files.wordpress.com/2020/11/53361749013.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_off000074c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C5 5104 bytes
SHA-256: 9bf36f4e39f4a53e9c7b752919076a259a97b3d25800edb3b5dc6516676aa34d
font_01_sfnt_off00008633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8633 10472 bytes
SHA-256: ab0f51ef540356d064dfccef13dbda2ac103437115de4e8bd05beafc4638cbba

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