Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d5a7d8ebc7e296…

MALICIOUS

PDF

71.3 KB Created: 2021-02-13 09:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a3c3d703dc73e52d7d838c6808fdd107 SHA-1: 8d904f1e76c80f5a529d58e3a8c77f08e330edb8 SHA-256: f5d5a7d8ebc7e296d47c2589f453b7a2da886d831d3817d3b0ac189f104daaac
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://druttle.ru/wix?keyword=ada+technical+assistance+manual+title+ii PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402737/normal_6017a08986956.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/jhWAEjf/26946897752.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/BwjcMjd/zombie_eaters_lyrics.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/zesanojavituvu-jabilipajep-suvirexig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474220/normal_5fd6227c16cfc.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/ehejjSl/descargar_block_gun_3d_ghost_ops.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443821/normal_5fd632b1cd448.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422631/normal_5fcb21b862e65.pdfIn PDF document text
    • http://ndfnasg.xyz/guxujakenujajebibanobrbwls.pdfIn PDF document text
    • https://lewebivaduxug.weebly.com/uploads/1/3/5/3/135392118/f32d34e81e.pdfIn PDF document text
    • https://wisukasef.weebly.com/uploads/1/3/1/4/131453855/gafisawesimusapuwuta.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/Xagf7ih/kizifegoj.pdfIn PDF document text
    • http://dvigatel.guru/lenovo_x1_carbon_5th_genqnpa4.pdfIn PDF document text
    • http://kkkirrreeee.space/rasusokurasetopardi5kq.pdfIn PDF document text
    • http://com-signto6.xyz/diccionario_frances_espaC3B1ol_laroussejwhg9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pisasegobure.epizy.com/bise_lahore_2019_10th_class_date_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/internet_explorer_automatic_settings.pdfIn PDF document text
    • http://povuputuk.epizy.com/variance_of_uniform_probability_distribution.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/below_deck_thailand_episode_guide.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_off0000db93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB93 5072 bytes
SHA-256: 20128816505688567000b1a8a771d50417e59525bc124f6d7a0b8cf7a87a294a
font_01_sfnt_off0000eca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA9 10252 bytes
SHA-256: e63be164e2dacff4404405786ce1f53f97b47a0152bc778961c89c1505435f7d