Malicious PDF — malware analysis report

Static analysis result for SHA-256 7856128b84cbf763…

MALICIOUS

PDF

96.0 KB Created: 2021-03-12 00:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12bc4e6131de866959c0bf378650af84 SHA-1: b01826a446eabf25f08aebe21b917d56e2daddd2 SHA-256: 7856128b84cbf7634acec3d44a3fa61853eab8e3eccc1a3d1dfff56dd3f82657
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic indicating an external URI, specifically 'https://leonvi.ru/wix?keyword=pathfinder+fighter+weapon+mastery'. This URL is presented in a context that suggests a phishing or malicious redirection attempt, masquerading as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/wix?keyword=pathfinder+fighter+weapon+mastery
    • http://bizarur.iblogger.org/ribisa.pdf
    • https://cdn.sqhk.co/lukumuzu/ijpChcy/fexodekigowefam.pdf
    • https://cdn.sqhk.co/totudavomud/e7hjllG/can_i_drink_bubble_milk_tea_while_pregnant.pdf
    • https://cdn.sqhk.co/jaguwubax/ahbYFgg/sotufevowujekabogu.pdf
    • https://cdn.sqhk.co/duzefodaf/jjQghjj/sharechat_app_in_telugu_apk.pdf
    • https://cdn.sqhk.co/movijomo/jOC2gic/red_slug_bug.pdf
    • https://cdn.sqhk.co/zifeduwa/iiijPif/2193938411.pdf
    • https://cdn.sqhk.co/zufutetuwume/jjjWTq4/snare_drum_sheet_music_book.pdf
    • https://cdn.sqhk.co/bimeniwog/i9icjb5/descargar_video_tube_play_tube_hd_video_player.pdf
    • https://cdn.sqhk.co/libibajuzumu/giN4Nie/driving_school_simulator_pc_game_download.pdf
    • https://cdn.sqhk.co/rutisifelom/gdzhdje/choices_stories_you_play_vip_subscription.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1021cd6b-ed7e-4ecf-ba58-99327dec9384/samsung_vrt_steam_washer_leaking_from_filter.pdf
    • https://uploads.strikinglycdn.com/files/dfab1c59-bcfe-41ef-8773-a43e5563ea24/aa_battery_charger_and_maintainer_review.pdf
    • http://tivagikirela.epizy.com/neluzinotolivokux.pdf
    • https://s3.amazonaws.com/bogijexu/81279219298.pdf
    • https://uploads.strikinglycdn.com/files/958b528f-2bec-44ee-8916-04bf675a757f/what_is_the_visual_vocabulary_used_for.pdf
    • https://uploads.strikinglycdn.com/files/bd1e2927-6948-4bfd-b50c-7b89e4deb529/hp_laserjet_4050n_win_10_driver.pdf
    • http://tufigeburevizi.epizy.com/mills_and_boon_audio_books_free.pdf
    • http://kazigolukujo.epizy.com/tamil_christmas_album_songs_free.pdf
    • https://uploads.strikinglycdn.com/files/486f5009-5818-4891-bb20-068450baf05d/problemas_resueltos_de_funciones_trigonomtricas_en_la_vida_cotidiana.pdf
    • https://s3.amazonaws.com/woxorojero/blank_outline_world_map_with_countries.pdf
    • http://nujafosedoke.epizy.com/revaluation_account_format.pdf
    • https://s3.amazonaws.com/sizabo/68107010648.pdf
    • https://s3.amazonaws.com/gekojulog/noripofubas.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013d3c.bin
ff0ca6df26b17f944c3306e0695647114c8d53352f3907c0fd7428ce7086cfde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D3C 5616 bytes
font_01_sfnt_off00015044.bin
73f2e82f50a6c0aa0ab0ae6853e2e18bc8d3050886cdd6bb23dca988b4e44569		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15044 10080 bytes

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