Malicious PDF — malware analysis report

Static analysis result for SHA-256 b259bddff7158faf…

MALICIOUS

PDF

72.3 KB Created: 2021-02-10 14:33:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b741dca01539920dec941e999a24c7d9 SHA-1: ec5b07989c18e99d90ad78044ee2b4fa8b87e79f SHA-256: b259bddff7158fafdb31a014972984e8657abd4800f793686ce9cecceec7ec5b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=log%20template%20google%20sheets In PDF document text
    • http://kiluniv.22web.org/castrol_edge_professional_oe_5w-_30.pdfIn PDF document text
    • http://damvglaz1.xyz/believer_drum_sheet_music_easykh9h4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371005/normal_5fc9936697b4f.pdfIn PDF document text
    • http://mon-cmbretagne.best/hobby_lobby_pirate_chest0yy48.pdfIn PDF document text
    • http://febanadedej.22web.org/runuratoxuwomorogirid.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/xamapebonijos/passport_renewal_application_online_form.pdfIn PDF document text
    • http://pebeminozari.epizy.com/47326391955.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/83189414133.pdfIn PDF document text
    • http://sapakebozo.rf.gd/bassie_en_adriaan_afleveringen_en.pdfIn PDF document text
    • http://pivirujifija.epizy.com/podivedivova.pdfIn PDF document text
    • http://sovizaz.epizy.com/pioneer_hm76_manual.pdfIn PDF document text
    • http://sotemapepuko.epizy.com/vikonovuroj.pdfIn PDF document text
    • http://difugarulid.epizy.com/best_army_games_for_android_free.pdfIn PDF document text
    • http://verirajoxa.epizy.com/abhimaan_song_bengali.pdfIn PDF document text
    • http://zikepodaw.epizy.com/ronotekuwiduve.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_off0000df7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7E 5076 bytes
SHA-256: 2a698e1595636662683d786b508cb4ff1706dfd75cf7cc8fcd56af26bbd9a029
font_01_sfnt_off0000f0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A2 10536 bytes
SHA-256: aeb2597329ad817719c9f6d7dfb0cc4be13b4248be8ed6dc8a6a71f71670871d