Malicious PDF — malware analysis report

Static analysis result for SHA-256 140429bc7dd148ea…

MALICIOUS

PDF

71.5 KB Created: 2021-02-27 21:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bb87e97a8c4b7bb875c0fd098d9f6c80 SHA-1: 7b91fba4c9f87cefbe6fcccd5e0072221e1004c4 SHA-256: 140429bc7dd148ea906c4aa7e1f8d6d411c0926e1db074bb6a92e45d0037666a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/award?keyword=midsummer+night%2527s+dream+sparknotes+act+3+scene+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466154/normal_5fd8a1522ba2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_601976cd3c3c5.pdfIn PDF document text
    • http://supsun-aero.com/nam_coronation_balanced_defensive_fund_fact_sheetr3sqf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467564/normal_602902570f859.pdfIn PDF document text
    • https://lakofanagobogan.weebly.com/uploads/1/3/5/3/135386994/8859528.pdfIn PDF document text
    • http://virona.org/wabugakawoxewodobuwotalokx4v55.pdfIn PDF document text
    • https://finenomasawovep.weebly.com/uploads/1/3/1/4/131437785/tuwedo.pdfIn PDF document text
    • http://xtrading.buzz/biblia_plik3ka.pdfIn PDF document text
    • http://teaapple.space/coliformes_termotolerantes_o_queasn5h.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/Vjh4ir1/fruit_bomb_mod_apk_download.pdfIn PDF document text
    • http://korsabarca.com/equipment_maintenance_log_templateri47u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406170/normal_5ff94e8057e71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5ff1051c9115f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413457/normal_601f7f63173fb.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/giaykji/cafe_racer_seat_for_sale_philippines.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5fcc25d7cd0f3.pdfIn PDF document text
    • https://cdn.sqhk.co/fusaduxuw/ggevD8Y/dark_side_of_the_abbey_haunted_house.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA25 5852 bytes
SHA-256: 92ef58b366c841f848e61de2d8f8d1a45c99647be3d7ce5d844ad775b1644477
font_01_sfnt_off0000edfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFE 10296 bytes
SHA-256: 61265d16c3e56fcc011f0f3aff4af71676f3074e3683a713e9736ba861bd06f6