Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0e81c27a66938a8…

MALICIOUS

PDF

63.7 KB Created: 2021-02-22 12:59:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8e0ee9324a83d46274fcd64b052d5242 SHA-1: a230d1ee79f8bf704f1cfd1ca4b32a6f28a7eadb SHA-256: a0e81c27a66938a8d23fff556c3024c3ce563cfff63018c39b0ffd12436ccd0e
166 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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • 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://jottigo.ru/wix?keyword=root+access+apk+uptodown PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369646/normal_60122e34c42c1.pdfIn PDF document text
    • http://fenellalucynelle.info/amity_university_lucknow_formmi3qh.pdfIn PDF document text
    • https://cdn.sqhk.co/gaduwifawide/dhjHggP/used_drum_kits_for_sale_ebay.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/cgjhdxa/85316959174.pdfIn PDF document text
    • http://thehensleys.org/lab_safety_crossword_puzzleo0ht0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474211/normal_5fda2a677f89c.pdfIn PDF document text
    • http://letnesil.xyz/partes_por_millon_unidadesbwk32.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/hRcnjfm/total_launcher_paid_themes.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/skyrim_dragon_language_name_generatorz0q4p.pdfIn PDF document text
    • http://bostpolamos.site/juz_30lwgez.pdfIn PDF document text
    • http://rubeatyshop.xyz/vuzubojizesefirirobenej6czjn.pdfIn PDF document text
    • https://cdn.sqhk.co/xenumobavun/hejdjd6/jagomud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pebejokepekizuz.rf.gd/70024328801.pdfIn PDF document text
    • http://memegimowa.epizy.com/china_gate_full_movie_3gp.pdfIn PDF document text
    • http://tolimimagag.epizy.com/wizifupawawotedakusose.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/household_budget_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/13410340478.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_off0000bf78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF78 5100 bytes
SHA-256: 87908917e5dd3a0122c2b22aaf622891ec8fb65c4c4c40c1e9ba5eee40308254
font_01_sfnt_off0000d0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FD 9740 bytes
SHA-256: 2e14f8efd3d8b78eb572bf9cd750f3c8372ffcecbd5e9256bd21643be17e0a38