Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ab17c0af8bb943…

MALICIOUS

PDF

74.3 KB Created: 2021-02-01 06:26:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7e7e3b608374f4bde4d64765b349bd1a SHA-1: 5d27f19c0372dbfea53e063516b2681f409394c5 SHA-256: 23ab17c0af8bb9433a9f2e71717c8ef9c5a31d1a6256f3e675c608d5e9f8c1fa
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://seumenha.ru/wb?keyword=descargar%20train%20taxi%20hackeado PDF link annotation
    • https://motoburibekisi.weebly.com/uploads/1/3/4/6/134623685/7af665c67acd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_600d94b441d26.pdfIn PDF document text
    • https://cdn.sqhk.co/sobupepokor/hiLgcih/bobby_fischer_chess_champion_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459036/normal_5fed2e6480637.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403140/normal_601492453eca6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380380/normal_5fca410210eec.pdfIn PDF document text
    • https://luludosob.weebly.com/uploads/1/3/4/7/134703274/1431109.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393779/normal_5fdacbdeb08c9.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/ih1geEs/w3schools_css_border_style.pdfIn PDF document text
    • https://cdn.sqhk.co/vetedaxuzele/agd0iuk/58565072264.pdfIn PDF document text
    • https://buserakufazuwus.weebly.com/uploads/1/3/4/0/134097478/pomuxuseg-woserog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468253/normal_5fe12dd54b19a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jumezezufa.rf.gd/grade_1_subtraction_worksheets_with_regrouping.pdfIn PDF document text
    • http://gujupikisikali.epizy.com/lusidizokipibiv.pdfIn PDF document text
    • http://lojupodinitaxug.epizy.com/sosevimagejidoxopu.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_off0000e45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45C 5300 bytes
SHA-256: dd5366d348500c5573cb9d133c749b9cd4b578de4ef816237ca0e74e465b4f7b
font_01_sfnt_off0000f663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF663 11308 bytes
SHA-256: 326c82cf1c16c82bb7f35e21e58199059ced3c9844c1612165e9a642963221c8