Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a379f46ba0faf98…

MALICIOUS

PDF

105.9 KB Created: 2021-03-22 00:25:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0748d21f03444895251e346725558f31 SHA-1: 76ba3c3852526b909b9cc349dc2c168f6c5d6c08 SHA-256: 0a379f46ba0faf98909fca1b03341532befb684ce8a32f0db115ae9ee1bf9f47
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of external URIs and the overall classification suggest an attempt to exploit the user's trust.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/award?keyword=tactics+for+listening+developing+pdf+%25D8%25AF%25D8%25A7%25D9%2586%25D9%2584%25D9%2588%25D8%25AF
    • https://gidixolatuloxag.weebly.com/uploads/1/3/1/0/131071157/retemi_zenobubovalog_votufiri.pdf
    • http://abistrans.ru/8227352236c8svg.pdf
    • http://pl50off.info/waripabazojtc73.pdf
    • http://50offit.pro/cules_son_las_propiedades_fsicas_generales_de_los_materiales_cermicos3pt7y.pdf
    • https://cdn-cms.f-static.net/uploads/4453563/normal_60329c0ccacd7.pdf
    • http://hightrade.club/how_to_calculate_gas_velocity_in_a_pipejztw4.pdf
    • http://maska-respirator.shop/tatekazojekoj6ps1.pdf
    • https://static.s123-cdn-static.com/uploads/4366313/normal_600319176f5a7.pdf
    • https://pejedakava.weebly.com/uploads/1/3/1/4/131453393/7d6169edbb8.pdf
    • http://teksalle.xyz/a_decent_cup_of_tea_book5j1t4.pdf
    • https://cdn-cms.f-static.net/uploads/4457848/normal_600d53606d3dc.pdf
    • https://cdn-cms.f-static.net/uploads/4503767/normal_6019c900bbd0f.pdf
    • https://basoxafal.weebly.com/uploads/1/3/4/4/134499196/tareb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5f79eaf1-c8e8-4de5-b0ee-b8d371e695ed/toshiba_television_remote_control_codes.pdf
    • https://uploads.strikinglycdn.com/files/b6eb5663-dbd0-46a6-83db-41e593e8a749/wifaguxogovemakonegabi.pdf
    • https://uploads.strikinglycdn.com/files/7d92a01b-8e65-4a48-b923-4184a04edd3a/megob.pdf
    • https://s3.amazonaws.com/xovekolamoxe/limeko.pdf
    • https://s3.amazonaws.com/figugipopar/how_do_you_unlock_the_kenmore_elite_dishwasher.pdf
    • https://s3.amazonaws.com/bomupi/12258956843.pdf
    • https://uploads.strikinglycdn.com/files/2da1e3a0-265c-4701-a570-6e66d917ad1a/80055129415.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000165e8.bin
92297552cfe19da986786b678f688c5df3e8fd37a0ce37023228129e940fbd89		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x165E8 28312 bytes
font_00_sfnt_off00010b66.bin
529d3e5550511704ba46d89eeb68145feb5d733b253689cb91902569e838eda2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B66 5332 bytes
font_01_sfnt_off00011d9d.bin
00515ab9f5b66ef7a9e8050010d1ef6fcf42003b308dc7b342f0f750284a32be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9D 22500 bytes
font_02_sfnt_off00014f3b.bin
69a730b8487052aa41eabefbd7e0df7cb2f9e0b27ea8499d5fe592cc541ae512		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F3B 16496 bytes

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