Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25b6184e09e2027…

MALICIOUS

PDF

72.0 KB Created: 2021-02-27 23:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a58e61a3d7a90345dd14f487b177b41b SHA-1: bf3d0bb133cfcc9808505f45b65a1a5a4a0b16d9 SHA-256: a25b6184e09e20274030b72e5677c6efb31fef7f7679a354d700ee08269d027e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation 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://vilenefex.ru/award?keyword=vampire+diaries+quiz+who+are+you PDF link annotation
    • http://pmaider.com/what_are_some_invasion_games9j9ct.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/hvlibA5/flixtor._life_knives_out.pdfIn PDF document text
    • http://mavitrade.com/sosudupizoxuke9v3az.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/MibECPX/tavubisona.pdfIn PDF document text
    • http://banquepopulaire-fr.org/aakasamantha_telugu_movie_ringtonesh7bir.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/D6vhdhh/tudizeketisiwe.pdfIn PDF document text
    • https://xewezepi.weebly.com/uploads/1/3/0/8/130813550/fakezojekeve-ridelemefopibar-gomituwofuwekuv-xidumirufipap.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvapolaxaj/jBD5v66/choi_game_angry_birds_vs_zombies.pdfIn PDF document text
    • https://metoxuxiduwano.weebly.com/uploads/1/3/1/6/131636764/gakaxepere.pdfIn PDF document text
    • http://christinaanddavid2019.com/37655382501jo3g7.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/ijghOhf/mobile_card_payment_devices.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/macmillan_gateway_b1_teachers_bookqyh43.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/CijiCOS/7_minute_workout_lucy_review.pdfIn PDF document text
    • http://ecoservice-vlad.ru/zuxozefelijodat43upj.pdfIn PDF document text
    • https://cdn.sqhk.co/wozovege/3gcOgLK/crowdsourcing_is_the_process_of.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/hfUDiaw/scarlett_mysteries_cursed_child_xbox_one.pdfIn PDF document text
    • http://salet.store/57192448780cgbwm.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_off0000dde3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE3 5500 bytes
SHA-256: 21efd830d867f6abcb448a2dbe6c7655f7e1d969562a152a495340b0aba547c6
font_01_sfnt_off0000f08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08C 10164 bytes
SHA-256: 9e727c1e2c0a55a77966a2a34f4170ba9b6f726353bfc981f3b26aaceabba8c3

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