Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea39cf20cf712baa…

MALICIOUS

PDF

68.6 KB Created: 2021-03-01 02:20:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bc301a155d7b601c9550481cfb08f214 SHA-1: dde79557ff450626bcc3d16784404b16f56577e1 SHA-256: ea39cf20cf712baa1b56292f0fd67cf656e3fb86c618517b25f666c5460f74b9
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/award?keyword=como+descargar+dengeki+bunko+fighting+climax+para+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389604/normal_601e1530677b9.pdfIn PDF document text
    • http://xazusifiwo.iblogger.org/brittany_perille_workout.pdfIn PDF document text
    • http://zujakupuk.22web.org/jnu_admission_form_2018_ug.pdfIn PDF document text
    • https://bilewemebit.weebly.com/uploads/1/3/5/9/135964156/ginofudenuf-bexog.pdfIn PDF document text
    • https://zipixaxunisegon.weebly.com/uploads/1/3/4/6/134625234/koxubomepasurilaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472208/normal_5fe7c03ca6978.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478415/normal_5fc751a06b38f.pdfIn PDF document text
    • https://cdn.sqhk.co/lokovipazal/idMid1B/chocolate_castle_cake_recipe_nz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427499/normal_5fe9e4ca6e795.pdfIn PDF document text
    • https://kozenuxifojani.weebly.com/uploads/1/3/4/6/134665776/fasuwego.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/giaBjec/best_hashtags_generator_instagram.pdfIn PDF document text
    • https://cdn.sqhk.co/bodorosuzuta/djbhcMu/torn_meniscus_treatment_surgery.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vebavibokifoko.epizy.com/asia_miles_flight_award_request_form.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_off0000ce40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE40 5744 bytes
SHA-256: 36cd2c196aff0457ab9873fce763ca205e97256ce18955a4bf65beb08adcf25f
font_01_sfnt_off0000e1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A6 10352 bytes
SHA-256: d9f8f1395f6dc1f5e8cb4551483223182dd8c483832923ac4ab549f30c750c85