Malicious PDF — malware analysis report

Static analysis result for SHA-256 74cd8b3c0c1cd7d0…

MALICIOUS

PDF

75.6 KB Created: 2021-02-25 18:33:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4a52410a613f50f5224b3cc27332e1a7 SHA-1: 1d474d3c98ef3dbd2077031a9747b60fbaaf3a6a SHA-256: 74cd8b3c0c1cd7d0e2fc81cbe319c35e2bf0b2e31291f2af5493f1bbb2dc18a4
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://bologen.ru/award?keyword=the+wahls+protocol+book PDF link annotation
    • https://cdn.sqhk.co/degavorofala/bLUiagg/evolutionary_theory_of_sleep_author.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/how_long_to_see_results_from_5_2_diet.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/gupurovazoge.pdfIn PDF document text
    • https://cdn.sqhk.co/rurizibaxami/JTOdggX/nda_exam_2020_result.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/dEgojf9/22817966546.pdfIn PDF document text
    • https://poxosuliw.weebly.com/uploads/1/3/1/3/131383655/dewugezu-bisapitug-fizofigalezin-rixinosalo.pdfIn PDF document text
    • https://cdn.sqhk.co/fibafape/FF8DijQ/natorafezatujuwegivomip.pdfIn PDF document text
    • https://ludefojixik.weebly.com/uploads/1/3/5/3/135347049/fafewenevosixajew.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/dsbV1ic/87768465119.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/what_bible_says_about_adultery_and_fornication.pdfIn PDF document text
    • http://paselon.getenjoyment.net/how_do_i_remove_demo_mode_sony_bravia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bumurulepowele.myartsonline.com/what_do_i_need_for_a_real_id_mn.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/vojamot.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/xofuriluzobuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/ergonomic_assessment_form_template.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_off0000eeeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEB 5268 bytes
SHA-256: c6dc5923c59c27edd8df8d21e237688b27601bc65038b0fa41a50df8ca1b6200
font_01_sfnt_off000100dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DC 9584 bytes
SHA-256: 1730043d929ce32596ba8106c52ff8c3d61adaab95b2f98ade5a5cec959d5d06