Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e4cb97e7cb2f5a…

MALICIOUS

PDF

65.9 KB Created: 2021-02-24 19:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b34d14d13b7242c4727c41b1806bdd7f SHA-1: 0686ae3a126b4f5ad03cd8990dba9e35a2e9e7b2 SHA-256: 48e4cb97e7cb2f5ab936927abe2c542c7fc3a2b5f7ff77eeac0c757ae18d5fe3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://bologen.ru/award?keyword=libro+sep+historia+5+grado+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378155/normal_5fd36c32caf81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_602fc593bff6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372085/normal_5feaff585fe16.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/hcy7dgh/word_search_2_games_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/ihgcjjs/38812171663.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/timozavowudelagedarewoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420760/normal_602f604112f1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421329/normal_5ff80c8652e61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503309/normal_5feff43c1aca0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liraperuwuw.atwebpages.com/toguwivetes.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/17_day_diet_cycle_1_grocery_list.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/65350816353.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/bow_tie_pasta_with_chicken_and_peas.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_off0000c258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC258 5476 bytes
SHA-256: 7e9022d997eca6c88e2da614936b33473e4e28fcc774db3d49c6ad8261a7f6a3
font_01_sfnt_off0000d4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F0 11228 bytes
SHA-256: 857fd32eac1ec527c4197aeb97c065dce8ae588b044b196c4e41ab301dce0f20