Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc00aa6db33eded…

MALICIOUS

PDF

68.7 KB Created: 2021-02-28 22:17:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a9140d34303e4e7863b95d1492099623 SHA-1: c5daaf2ff9e521267d07dc1d5379441abfb2a8c9 SHA-256: 6dc00aa6db33edede62089c7ce542c88fa2d17c8916ca4ff351e47148944522f
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://seumenha.ru/award?keyword=sugar+blues+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446921/normal_601174284218f.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwinoxaxava/jejehjm/poxubifisenolulogad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423428/normal_5fe994a97b5f9.pdfIn PDF document text
    • https://jirogadipew.weebly.com/uploads/1/3/1/6/131606393/juzep-nosuwufomon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_5fd91dee39d0d.pdfIn PDF document text
    • http://kusafomidufe.mywebcommunity.org/diccionario_bilingue_ingles_espaol_oxford_online.pdfIn PDF document text
    • https://cdn.sqhk.co/razilipot/jijsA43/iranian_calendar_year_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/vituxezij/kgcjcid/naturalizer_boots_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393790/normal_5fe8d2332c320.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/dk1miaz/haxnicks_fruit_tree_net_cover_2m.pdfIn PDF document text
    • https://cdn.sqhk.co/sudizatase/jcjihgS/stokke_tripp_trapp_cushion_etsy.pdfIn PDF document text
    • https://cdn.sqhk.co/rewakevutel/eihVjfQ/jabula.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/8IEH3MR/23995567275.pdfIn PDF document text
    • http://bejisosubonito.sportsontheweb.net/64554158297.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/letras_de_canciones_religiosas_hoy_seor_te_damos_gracias.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gurabagoderes.atwebpages.com/88230099125.pdfIn PDF document text
    • http://galiwasik.rf.gd/kenmore_electric_range_model_790_parts_diagram.pdfIn PDF document text
    • http://lazevemu.epizy.com/bosch_washing_machine_service_manual.pdfIn PDF document text
    • http://pejebitopaw.rf.gd/metal_gear_solid_v_quiet_cell.pdfIn PDF document text
    • http://wafopob.rf.gd/lenovo_g50-80_webcam_drivers_for_windows_7_64_bit.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_off0000cf94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF94 5312 bytes
SHA-256: 29d516e4575bf5999daa7937f46e2d6e57aa1d9fd6c4add1a20e38076139d143
font_01_sfnt_off0000e1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BB 10668 bytes
SHA-256: f7df3391e92a14ae772758ada3de7f87a83c3804ea3c1fc11c7cbe962bcc0d68

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