Malicious PDF — malware analysis report

Static analysis result for SHA-256 266f0dafe804d9bd…

MALICIOUS

PDF

41.8 KB Created: 2020-11-09 10:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5ec79a3ca2d06aaab5c796f99e616659 SHA-1: c9574cbf0cbc0d7e1fc7a0ff621057ecc2f98e74 SHA-256: 266f0dafe804d9bd732e51eacfbb02c90cde58bbc6b205ee3ff32ca45ed5d4e8
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://morupataniseb.weebly.com/uploads/1/3/4/5/134502176/d471f66e7.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://traffine.ru/aws?keyword=peter+pan+and+captain+hook+fight+scene In PDF document text
    • https://morupataniseb.weebly.com/uploads/1/3/4/5/134502176/d471f66e7.pdfIn PDF document text
    • https://wisizexabebaj.weebly.com/uploads/1/3/4/4/134461468/5690193.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/903439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5f9f16585ecc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5f91237c43da7.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/4924169.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/vadomev.pdfIn PDF document text
    • https://tivurenufetoza.weebly.com/uploads/1/3/4/2/134235987/2b416df317.pdfIn PDF document text
    • https://rimofunoduw.weebly.com/uploads/1/3/4/5/134525219/6861503.pdfIn PDF document text
    • https://duvupobilalef.weebly.com/uploads/1/3/4/6/134630448/nitedosoponug_mowazene.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/norixerowiromemidu.pdfIn PDF document text
    • https://larogarokod.weebly.com/uploads/1/3/4/0/134018293/cdecb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000062c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C6 5452 bytes
SHA-256: b7ae0de2dd479450a124f672b7cd750ef870aa97e30d1e676518ec70f2ad39c3
font_01_sfnt_off0000754d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754D 10984 bytes
SHA-256: 98ca80f1d080e42ad0928ddd1fd4c553ba2d7d43d7e71702a15a096867307bc4

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