Malicious PDF — malware analysis report

Static analysis result for SHA-256 63faf7923c5c01e4…

MALICIOUS

PDF

77.4 KB Created: 2021-02-16 09:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d75a981d7231c058f2b1e029ccfc794d SHA-1: 5c4d08591d568481af420086587e3814c4b032bf SHA-256: 63faf7923c5c01e4f996516d2d3e996f81ab4af553b15ce60cec8f2349cdfdac
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://maypoin.ru/123?utm_term=easy+math+equations+with+answers PDF link annotation
    • http://secret-empire.ru/temario_tecnico_auditoria_y_contabilidadzi9ox.pdfIn PDF document text
    • http://storeplus.pro/bahubali_songs_in_telugu_320_kbpsc7ote.pdfIn PDF document text
    • http://sesumuruvo.22web.org/zulesunedaj.pdfIn PDF document text
    • http://smotrikino.fun/vosuselunquj8.pdfIn PDF document text
    • http://bimiwefumukiv.22web.org/41228404252.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421350/normal_5ff5b1e2911b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456166/normal_5fe3f5ceb1019.pdfIn PDF document text
    • http://tinivoze.22web.org/transformers_the_last_knight_barricade_death.pdfIn PDF document text
    • http://adv-workshop.site/8682846166452npc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487416/normal_600364e54fd65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5fe97c3312ca1.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/fuwawibu/5676136055.pdfIn PDF document text
    • http://bebalujoworaz.epizy.com/inari_amertron_quarter_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/70778422469.pdfIn PDF document text
    • http://momosetid.rf.gd/19922237080.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/84202551626.pdfIn PDF document text
    • http://pibasas.epizy.com/film_bedevilled_sub_indo.pdfIn PDF document text
    • http://rovetenexosa.rf.gd/cunto_tiempo_tarda_un_residente_en_arreglarle_a_su_esposa.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_off0000f18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18F 5172 bytes
SHA-256: a519892bd4f8cb275cc063da42b9a9f81a6ae1a60b07314b37fa7e1c9df6b1d6
font_01_sfnt_off00010315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10315 11188 bytes
SHA-256: 00ec10fc3fb71b5e9435311ea260cb905d407c43bf1cbedc2f0f2911d54038c7