Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c8af049ae3c7b2…

MALICIOUS

PDF

73.2 KB Created: 2021-02-19 07:32:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5a5f139130fbc923153bba265e14d857 SHA-1: a1a77015f6d1b9c1f2f50a57300bcad16f4b0262 SHA-256: c8c8af049ae3c7b2062a167367e797c3d824d5f0a3548adb932b9fe02652802e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wb?keyword=la%20la%20land%20song%20piano%20scene PDF link annotation
    • http://amsidgi.xyz/2055619810771f7h.pdfIn PDF document text
    • http://amaryllis.space/retim_ilke_ve_yntemleri_ders_notlar_slaytz3zmq.pdfIn PDF document text
    • http://ueuniti.xyz/kapinugajudakivaamhi4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479678/normal_5ff95f93aa454.pdfIn PDF document text
    • http://yourlivehelp.com/86791276280uqjtv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465151/normal_601644f199777.pdfIn PDF document text
    • http://shoop-fe.ru/3207069648500uit.pdfIn PDF document text
    • http://nesobaka7.xyz/77141779406jqrir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_600e0293b365d.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/ihqijlT/megakipirawofaporixujuxax.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/kavalukato/nurelinogenefexilu.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/mozomewo.pdfIn PDF document text
    • http://xugonowelimije.epizy.com/bautismo_de_fuego.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/fomafabuvijagedaloxinir.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/facebook_photos_original_resolution.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_off0000e044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 5084 bytes
SHA-256: dd221a6bec01503344afb997c0de6249edd999fa3465e639baa0f7a4a5aa62f2
font_01_sfnt_off0000f1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A9 11660 bytes
SHA-256: fdb77ccf63154a2dc3661c2b1f9e6e4e282ce3f6e0e7dfb8851235770289de24