Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a52e7d6457ee4e5…

MALICIOUS

PDF

78.1 KB Created: 2021-04-02 01:56:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 110c2bb9ad6f0c372072a3efd4bdb37a SHA-1: 485a85f312fa14e7b31a291f5151216f85fd46d3 SHA-256: 9a52e7d6457ee4e5b84435b39701b97e609c169967588c39ff2f5077ced0ff6a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'bologen.ru' which is disguised with a game-related query parameter, suggesting a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and embedded URI are strong indicators of a malicious document, likely intended to trick users into visiting a compromised site or downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/123?utm_term=destiny+2+forsaken+light+guide PDF link annotation
    • https://cdn.sqhk.co/sopirisaset/dQeOjbB/cowboys_vs_zombies_mobile_game.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/b2je6id/xijakilujato.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/aIP1Zu1/rokatake.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/agg5hju/58807013736.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/PBVgixS/35821971746.pdfIn PDF document text
    • https://cdn.sqhk.co/zazifutunoj/eicGnkp/religion_of_the_ancient_celts.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/jmWChig/best_tik_tok_flute_ringtone_2020.pdfIn PDF document text
    • http://vukenetux.22web.org/defensa_nacional_en_el_peru.pdfIn PDF document text
    • https://cdn.sqhk.co/xavexapoxiv/dG5hdhd/20746726871.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/jajaXjj/lobujunupoguji.pdfIn PDF document text
    • https://cdn.sqhk.co/jamasedese/igk4jg2/3d_maze_meme_maker.pdfIn PDF document text
    • https://cdn.sqhk.co/zixajofazadi/tvjdRhi/arcade_machines_for_sale_michigan.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/iighagf/74741946241.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/gewisetug/coreldraw_x4_windows_10_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/cara_historical_data_yahoo_finance.pdfIn PDF document text
    • http://fejozimi.epizy.com/angry_boy_whatsapp_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/tokuwujupisijojanir.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/the_antonym_of_the_word_solitude.pdfIn PDF document text
    • http://luwazogibuj.rf.gd/70019536935.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/6088297778.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/low_calorie_frozen_drinks_at_dunkin_donuts.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/mobile_bang_bang_vng_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/jinurogi.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_off0000f3f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F3 5464 bytes
SHA-256: e0f9bf4cff94100570f62c71636fbc93cf0452390e69aa2a4159996f89f3d43f
font_01_sfnt_off00010693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10693 10748 bytes
SHA-256: 8cc0ce550abfed5df24c509a4f190ddb809194d7db8bbcb1a0de958ecd7fdf0f

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