Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ba048111ff807f…

MALICIOUS

PDF

70.5 KB Created: 2021-02-12 12:01:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f711c4348dd18c9d03d83f8329538312 SHA-1: 046c2efd56b20ccd1a9df31b1f80f8f699f6a691 SHA-256: a9ba048111ff807f3d15def8711c1ef447927aec686ed09a6a7cf9d0c276f234
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://leonvi.ru/wix?keyword=dw9116+service+manual PDF link annotation
    • https://cdn.sqhk.co/parabeset/ghw1sbC/super_nes_emulator_android_apk.pdfIn PDF document text
    • https://mimejomukokije.weebly.com/uploads/1/3/4/5/134510045/virarepo.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/vapifoxepatumulivboxum.pdfIn PDF document text
    • https://cdn.sqhk.co/movozuba/gvmA4jf/67284605014.pdfIn PDF document text
    • http://nibelv.xyz/91356592968lfzzo.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/jgUmtHG/vunananezavesu.pdfIn PDF document text
    • http://airbin.top/38323950966gwlnv.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/afmiihi/30183911317.pdfIn PDF document text
    • https://kawikixefi.weebly.com/uploads/1/3/5/3/135388441/ximafosuke-vesedina-tubej-buwiduwoto.pdfIn PDF document text
    • https://buvaranugabenu.weebly.com/uploads/1/3/0/8/130873820/nalitolorafexeb.pdfIn PDF document text
    • https://kumajevebak.weebly.com/uploads/1/3/1/8/131856027/dejipoketelidubogi.pdfIn PDF document text
    • https://kosukanawator.weebly.com/uploads/1/3/5/3/135304621/6ec8886.pdfIn PDF document text
    • http://3gusevshop.website/waste_management_project_report76msy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/vezijasanetotomimejivizu.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/kendo_ui_grid_toolbar_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/74677981281.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/face_changer_app_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/ripejatibulunafitejor.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_off0000d7a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A2 5456 bytes
SHA-256: a43de958c3ce3f583a370827ae7718cbe6fb5e5c5e840b76286eb2553688795a
font_01_sfnt_off0000ea34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA34 10076 bytes
SHA-256: 4674808e590cbdac98189b8867cfc97d0cb97820421aac0f50677a3fb343b593

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