Malicious PDF — malware analysis report

Static analysis result for SHA-256 0955e0abc82ad302…

MALICIOUS

PDF

182.3 KB Created: 2021-03-29 13:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2005f8db5c135e45d4c45250984aa860 SHA-1: 7a3cffe884c0ac6bdbae8dbdd251a4902e5d21d5 SHA-256: 0955e0abc82ad30237aa3be3de95263dd02c9a48e9874023ae9f123250de2ea9
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and embedded URLs, with one prominent URL being https://botokaw.ru/wix?keyword=ti-89+titanium+manual. The document body, though heavily obfuscated, contains text fragments suggesting it is masquerading as a calculator manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=ti-89+titanium+manual
    • https://cdn.sqhk.co/lenubire/ifWjahc/2d_chess_game_free_download_for_pc.pdf
    • https://cdn.sqhk.co/zuzipogowita/igtjfwt/legendary_secret_hero_empires_and_puzzles.pdf
    • http://perfectiona.online/metric_conversion_problems_worksheet_with_answersaku4e.pdf
    • http://gnoogle.site/27394292721jn0ps.pdf
    • https://cdn-cms.f-static.net/uploads/4465396/normal_602b68d2d1adc.pdf
    • https://cdn-cms.f-static.net/uploads/4450731/normal_605b906315cde.pdf
    • http://cartest.pro/comala_workflows_user_guideh6ehu.pdf
    • http://reduslim-official.website/como_hacer_un_estudio_biblico_para_nioshh7e3.pdf
    • https://cdn.sqhk.co/bisadumiza/hhg5gf2/utorrent_pro_apk_free_uptodown.pdf
    • https://static.s123-cdn-static.com/uploads/4419849/normal_5ff1977e5577e.pdf
    • http://goodik.fun/wound_care_guidelines_2020t2jmv.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sumesawoxajew/shark_steam_mop_replacement_parts_uk.pdf
    • https://uploads.strikinglycdn.com/files/5e3c91b1-03db-4d7a-b995-2522f26e349d/how_do_you_really_win_the_lottery.pdf
    • https://s3.amazonaws.com/rekawexuretowo/62274851743.pdf
    • https://s3.amazonaws.com/zevutebulaworel/melapegawisiterow.pdf
    • https://uploads.strikinglycdn.com/files/64682ce0-05a8-477a-827f-e41397518aa4/the_drama_of_scripture_quotes.pdf
    • https://s3.amazonaws.com/lezopobigeza/litepak.pdf
    • https://s3.amazonaws.com/purawuma/mobile_app_template_for_android_free.pdf
    • https://uploads.strikinglycdn.com/files/8f54cc87-5d05-4723-8267-45096adda652/cognitive_psychology_academic_jobs.pdf
    • https://s3.amazonaws.com/tasufagijaremo/fiwaletakaxesawafunegiko.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000266fa.bin
1069a9ead0bc365701a601b0a9e144cffe33dc55ba708086c0847d9df5cf95bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x266FA 1968 bytes
font_01_sfnt_off0002701c.bin
d0727be267c870f5a182bf38e213d50c008fb167d300fed5d929dc2db48df9cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2701C 4888 bytes
font_02_sfnt_off0002807f.bin
84fc5ac20f1203893b8ee2220d2ead489111cee687e0e794cacb0bf792f76d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2807F 1240 bytes
font_03_sfnt_off0002878b.bin
0c2ba86662ea55da63d5449234c234532cb5317fefcfd4184510232e40628c76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2878B 21300 bytes

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