Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f5fa982d61b7d30…

MALICIOUS

PDF

73.2 KB Created: 2021-02-25 21:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ec3f94a4c53add0257bb2aa05690cff2 SHA-1: 4f16093613cde6cf52e69bd32a85017455e045f3 SHA-256: 4f5fa982d61b7d30b5cbccf522becebc3193cc4faa1e4e54a4e44acf36d55517
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/award?keyword=brandon+lee+cause+of+death+wiki PDF link annotation
    • http://ronifibofizet.medianewsonline.com/vuzopetobuvibide.pdfIn PDF document text
    • http://lakujalinifibo.mypressonline.com/french_story_books_for_beginners.pdfIn PDF document text
    • http://varnisvakq.ru/badger_garbage_disposal_leaking_from_power_cordymbyy.pdfIn PDF document text
    • http://republvinb.fun/amen_break_free3e91n.pdfIn PDF document text
    • http://opensoda.pro/86403642889qs4ca.pdfIn PDF document text
    • http://classkaod.ru/acta_constitutiva_de_sociedad_anonima_mexicanae6dkd.pdfIn PDF document text
    • https://titugujogimob.weebly.com/uploads/1/3/4/0/134017720/66bbc1e7e1561e4.pdfIn PDF document text
    • http://fortuneo.biz/8784727501msnlp.pdfIn PDF document text
    • https://cdn.sqhk.co/zivupowixede/ibidji2/robot_hero_transform_shooting_game_2019.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/tokyo_ghoul_chapter_139_discussion.pdfIn PDF document text
    • http://x-bionic.shop/poke_genie_overlay_not_workingpcmv8.pdfIn PDF document text
    • https://cdn.sqhk.co/tefupudoma/ieLVbdU/zeludubexexiw.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/hddjj6x/men_s_table_tennis_scores_today.pdfIn PDF document text
    • https://cdn.sqhk.co/dasewugiru/iaMhjSe/rhee_walking_dead_crossword_clue.pdfIn PDF document text
    • http://kujunat.medianewsonline.com/6.0_powerstroke_ficm_repair_kit.pdfIn PDF document text
    • http://yoga-fitness.space/pimp_book_summary9r4rs.pdfIn PDF document text
    • https://gitodaxip.weebly.com/uploads/1/3/5/9/135960033/nuwelorugudas.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_off0000e27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27B 5316 bytes
SHA-256: d43ff8888c997cbd309017307afc176097c55707d1025ee77b7be2d5b658093e
font_01_sfnt_off0000f49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49A 10264 bytes
SHA-256: f895031cdbc9a18706ad0ddb5012a907bbce3bfcc9e1b541b95f0a03287d9d2e