Malicious PDF — malware analysis report

Static analysis result for SHA-256 40888715a2bba169…

MALICIOUS

PDF

64.0 KB Created: 2021-02-09 21:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 48658760cc9db76c669d144d5593a179 SHA-1: 72ba3ccc1608a7bd8283e67d12c43ea6fe9fe925 SHA-256: 40888715a2bba1699a1c164385f85b45c1d19f493b4f1acb31f131dd4f35d25f
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://jacksth.ru/123?utm_term=willow+canyon+outdoor PDF link annotation
    • http://opensalon.xyz/cpt_code_for_occlusal_guard_by_reporth409p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472783/normal_5fdd99116c3c4.pdfIn PDF document text
    • http://vivadoctor.ru/tmb_mapa_metro_barcelonanqkry.pdfIn PDF document text
    • http://c-advance.space/sipoc_templates_excelabvzk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413000/normal_6003a4e45c59d.pdfIn PDF document text
    • https://cdn.sqhk.co/katutilit/schex6I/39981973539.pdfIn PDF document text
    • https://cdn.sqhk.co/pegidago/XV8n1og/como_descargar_geometry_dash_lite_para_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/govulasem/eDahaid/the_rolling_stones_ultimate_complete_works.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/dslr_blur_background_apkltmw5.pdfIn PDF document text
    • http://nakanilo.club/thimbleweed_park_ps4_reviewb1v2x.pdfIn PDF document text
    • https://cdn.sqhk.co/seseniluvus/jAbjbCe/73317732617.pdfIn PDF document text
    • https://cdn.sqhk.co/rufadexu/gjBha4Q/jotopuxofoz.pdfIn PDF document text
    • http://idealica-uficiale.website/kogan_android_tv_638_user_manuald99rg.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/eGjd6oP/minecraft_cave_update_all_new_mobs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sokevigaku.rf.gd/82752373931.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_off0000bf16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF16 4960 bytes
SHA-256: 40167e23c39bbb95fea1b2ce06f79ed760401162bb2d1f85a9a122566c9f81a0
font_01_sfnt_off0000d025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD025 10384 bytes
SHA-256: 365f8841eab2166eac973c63aaa0f7affa918406736ed8fe3386e8382a0f022d