Malicious PDF — malware analysis report

Static analysis result for SHA-256 3729662da6f03e7c…

MALICIOUS

PDF

78.1 KB Created: 2021-03-21 03:12:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aa37c594fa3f273f1d098a5e186000c SHA-1: 5210dcd60dc6fd0b950a23bf095c7d15b3807f5e SHA-256: 3729662da6f03e7c609dc476ef4a53a33a76826c68522ead797e64af3d63fa38
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://lozipotod.ru/award?keyword=ecosistema+biotico+y+abiotico+pdf
    • https://cdn.sqhk.co/depivuni/cZzjeie/pictoword_level_81_to_100.pdf
    • https://static.s123-cdn-static.com/uploads/4387050/normal_5ff310344e9bc.pdf
    • http://bobiruropiles.22web.org/tracker_app_now.pdf
    • https://cdn.sqhk.co/vefusujix/DgeLjfx/susewowemamazovalet.pdf
    • https://cdn.sqhk.co/gitaligido/nUQpJ16/10080117112.pdf
    • https://static.s123-cdn-static.com/uploads/4412394/normal_60081719396d3.pdf
    • https://cdn.sqhk.co/dabebasavus/eggXhc8/dirt_bike_unchained_mod_apk.pdf
    • https://cdn.sqhk.co/ramawuvade/hfMAijQ/angry_birds_evolution_2020.pdf
    • https://cdn.sqhk.co/zesonixiv/Ohcjhie/cute_drawing_ideas_girl.pdf
    • http://kugenezajiz.22web.org/lavetisixobokatur.pdf
    • https://cdn-cms.f-static.net/uploads/4451574/normal_600c012319a95.pdf
    • https://cdn.sqhk.co/sexifirume/gu8MNjf/antventor_point_and_click_puzzle_adventure_apk_obb.pdf
    • https://cdn.sqhk.co/pinofizulag/Ajcjcv7/xopur.pdf
    • http://zugapuvu.mywebcommunity.org/54088935627.pdf
    • http://fosipuzo.mypressonline.com/hp_officejet_5740_printer_paper_jam.pdf
    • https://cdn.sqhk.co/sidamebo/jeNtifZ/warlords_of_new_york_hunters.pdf
    • https://static.s123-cdn-static.com/uploads/4495973/normal_600833d9d4c58.pdf
    • https://cdn.sqhk.co/kululojilo/ejh5heJ/brick_game_android_app.pdf
    • http://vizilirudigub.getenjoyment.net/dnd_5e_best_healing_spells.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dufojamimusim.atwebpages.com/riesgos_psicosociales_en_adolescentes.pdf
    • https://s3.amazonaws.com/suxuzubojut/now_hiring_templates_free.pdf
    • https://s3.amazonaws.com/jezaxojipevu/27777993002.pdf
    • http://tifomoja.epizy.com/can_you_lose_weight_by_juice_cleanse.pdf
    • http://noxewun.rf.gd/vopavipole.pdf
    • https://s3.amazonaws.com/tumuzu/mental_retardation_checklist.pdf
    • https://s3.amazonaws.com/rovikibixu/dedenipe.pdf
    • https://s3.amazonaws.com/zumezeviwakiz/android_emulator_black_screen_linux.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_off0000f21d.bin
d5d84703139ecdb986b98b43592abf19bab28535dc6544dff9d549f3db16252f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF21D 5372 bytes
font_01_sfnt_off0001045e.bin
8c81f77617b5827871430c55ac5a6f71d25e83b4dbc1c77ca93ca2f9f63786b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1045E 11284 bytes

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