Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4744b4ebcec8a4…

MALICIOUS

PDF

68.3 KB Created: 2021-03-04 10:29:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 45a9b1c53daa22ff7ba83960c1e5acf4 SHA-1: 0d53d26cea9353c1dcecc4f25f6610d6821c07bf SHA-256: 5d4744b4ebcec8a47e9242f66be4bc3efe1bf8cea39e06744aaecfa64dcc8711
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://xajibur.ru/award?keyword=la+la+land+soundtrack+vinyl PDF link annotation
    • http://dkmz1.club/53785521093yybxy.pdfIn PDF document text
    • https://cdn.sqhk.co/nulegudup/die2Sjh/xomoluwusekiduwudilub.pdfIn PDF document text
    • http://helper-badges.com/apogee_symphony_mk1_manualocp0u.pdfIn PDF document text
    • https://senekuzoje.weebly.com/uploads/1/3/5/9/135978249/kiletib.pdfIn PDF document text
    • https://lekamenofujilap.weebly.com/uploads/1/3/4/6/134690267/6e838a2df37b59.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/naponajafenexomati8ci40.pdfIn PDF document text
    • https://cdn.sqhk.co/xozirijor/0XifhiT/mewinajanejer.pdfIn PDF document text
    • http://mpvideo.org/50009302481hzulr.pdfIn PDF document text
    • http://kersita.fun/98453869895bk59g.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/fjgihw5/45299946585.pdfIn PDF document text
    • https://cdn.sqhk.co/gogamosujimi/Ehishfd/paxuvala.pdfIn PDF document text
    • https://dajilifu.weebly.com/uploads/1/3/4/8/134891154/dekanoturexarut.pdfIn PDF document text
    • http://maykistore.ru/polaroid_tablet_password_recovery19bxf.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/millionaire_next_door_formula_paw.pdfIn PDF document text
    • https://cdn.sqhk.co/mewedenemez/4ijgfhg/racing_car_2_game_download_for_pc.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_off0000cdfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDFA 5100 bytes
SHA-256: 68d48bb774be68f14969f054b465e5ff2202e6e6290f7ceb124de56a8ff99e78
font_01_sfnt_off0000df71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF71 10564 bytes
SHA-256: 147de393735f0284ed26796c9713ec8f3b9d94e97f10a1975553fc6f7f3caf67