Malicious PDF — malware analysis report

Static analysis result for SHA-256 0230be96950ff5d3…

MALICIOUS

PDF

70.1 KB Created: 2021-05-09 16:13:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 11ff0f2fc426b1bc59988f4310401e06 SHA-1: 238f3262a76e9cd29694ddb40df299cea0bf0c80 SHA-256: 0230be96950ff5d3977dabdc4bd073cfb836cb20316a97af23fb8e08478a7411
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an external URI pointing to a suspicious domain, identified as a link farm on disposable hosting. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=math+rock+what+is PDF link annotation
    • http://menawamuno.iblogger.org/excellent_cover_letter_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/QOPUhfM/lofun.pdfIn PDF document text
    • http://xuroriwonufuz.scienceontheweb.net/excel_data_analysis_toolpak_does_not_show_up.pdfIn PDF document text
    • https://cdn.sqhk.co/fewesiwe/dKzhdgh/rezopumurixukasopidivawos.pdfIn PDF document text
    • http://xoxapepagaxon.mypressonline.com/luduv.pdfIn PDF document text
    • http://tonevagewalilu.medianewsonline.com/academic_stress_articles.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejeni/jhqMj7W/miranda_lambert_songs_2019.pdfIn PDF document text
    • http://zakewabo.scienceontheweb.net/app_para_aprender_ingls_gratis_sin_internet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2de94513-2e0e-44c5-892c-e1c001864d63/the_logicians_refuted_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/595404ff-c3c1-4975-b355-242eb8f6ae20/37521628392.pdfIn PDF document text
    • http://gusadixesexa.epizy.com/guild_wars_2_starter_guide_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d1b0144-9211-40c7-a3cd-6407dbc839a7/used_car_safety_inspection_checklist.pdfIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/how_to_fix_a_jammed_ink_cartridge.pdfIn PDF document text
    • http://lufopudizomuv.atwebpages.com/wifukexisejivosorive.pdfIn PDF document text
    • http://fowimifefezujo.myartsonline.com/sogibixozafapafa.pdfIn PDF document text
    • http://vawagetes.rf.gd/55073002182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed8c1586-5c79-4585-a716-4e29a8025a4b/fiwobibodi.pdfIn PDF document text
    • http://vafedoba.rf.gd/xoxejujeradalepazufil.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/how_to_use_element_roku_tv_remote.pdfIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/mini_mental_status_exam_3_questions.pdfIn PDF document text
    • http://pagiburisodu.epizy.com/export_garageband_project_to_mp3.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_off0000d629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD629 5016 bytes
SHA-256: 49e4a7bef38279b8cc17ebf7ade7b61ccb397c9e51f2d24d76801a6b5b2112ca
font_01_sfnt_off0000e750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE750 10820 bytes
SHA-256: a54bc0c8eab135efadcc6b6ae4fbe172649127162961cd16d883972c789df6bc

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