Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f97f79b4480dcfd…

MALICIOUS

PDF

78.4 KB Created: 2021-03-06 15:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6b507b39eb3eb6507cd256dadf0009e3 SHA-1: 6410eb6eb809cad131f2dae6ee3d7a97c8f951bc SHA-256: 9f97f79b4480dcfdf75270914cf56b7c261fcf5d11aa60da37a9f9a0181d14d0
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains a URL that appears to be a lure, disguised as a search result. This URL is the primary indicator of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/strik?utm_term=how+long+is+a+britax+marathon+70+car+seat+good+for PDF link annotation
    • https://cdn.sqhk.co/xawobovuji/jecgcCu/merge_master_impossible_puzzle_games.pdfIn PDF document text
    • http://gratoramaa.space/brother_xl_5130bb8nk.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/Vhg4Vii/business_card_creator_near_me.pdfIn PDF document text
    • http://milanbeachs.space/popori6wxy.pdfIn PDF document text
    • http://usene.xyz/bikram_singha_bengali_hd_movieim7mx.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/iaGupBn/tigikod.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/hbPUEji/battleship_game_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/famagafe/gfChhOA/xesamo.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojiranat/fhj3shi/45622823545.pdfIn PDF document text
    • https://cdn.sqhk.co/tikisudolo/35Cc4c8/lords_watch_tower_defense_rpg_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/6hbidie/wood_carving_projects_for_beginners_free.pdfIn PDF document text
    • http://krepezh.guru/664700772959gljj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/giza_dream_sheets_vs_boll_and_branch.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/7420206699.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/altium_designer_15_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/tell_me_about_yourself_sample_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/zifojokuk.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/vivaldi_spring_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/champion_song_video.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_off0000f31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31A 5916 bytes
SHA-256: ed1fa86334909807ec1e0ca2ad6df46c4d05581cfe868f8f383ade31b9696f53
font_01_sfnt_off00010736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10736 10868 bytes
SHA-256: b0e9ba94f1e404cd65c6b4353c0cffc4149290db382fcaa68561f75465147c84

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