Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c87071ba18a1b0a…

MALICIOUS

PDF

84.6 KB Created: 2021-02-27 20:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2b540cb1c9b76272ba05a7397130c59e SHA-1: bd742ca1b0ab850a12d4746f5af1fb312208af26 SHA-256: 0c87071ba18a1b0a5d812d9c663daf3b528104de94e274e2540662c96b139a5f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/strik?utm_term=what+is+social+constructionist+epistemology PDF link annotation
    • https://cdn.sqhk.co/vumorumuvogi/Erz7Dia/undertale_wallpaper_ipad.pdfIn PDF document text
    • https://dakuwiremab.weebly.com/uploads/1/3/4/9/134901294/povawuk.pdfIn PDF document text
    • https://zutijuxugovoxi.weebly.com/uploads/1/3/4/6/134684331/747377.pdfIn PDF document text
    • https://cdn.sqhk.co/fovuxugo/ghehfgh/today_show_recipes_salmon.pdfIn PDF document text
    • https://tetagusupawuwag.weebly.com/uploads/1/3/4/5/134586179/zexefazadezap_nelenumer_bivipomalekevig_zadajujebuz.pdfIn PDF document text
    • http://pomirkapa.site/casual_leave_register_format3a06h.pdfIn PDF document text
    • https://poxatekegevu.weebly.com/uploads/1/3/4/7/134753674/0391ca83c651ee.pdfIn PDF document text
    • https://kiwotatuna.weebly.com/uploads/1/3/1/8/131856308/d4b010.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mawabubobiniz.rf.gd/daforovufexo.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/rabuz.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/brasero_disc_burner.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/bose_soundsport_wireless_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/kindle_paperwhite_reading_formats.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/68503476914.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/ammyy_admin_free_3._9.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_off00010f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F08 5464 bytes
SHA-256: 086fe68c0294747eaf9c063e3333f869a6ac4102f0c88f1c3ec18fffd2716c8f
font_01_sfnt_off00012185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12185 10552 bytes
SHA-256: 192d7f04f837f0a5dedfe7d362ee5c60de22c1ad3e948868d22ba02de1a7f6ba