Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a18622908a7f94…

MALICIOUS

PDF

76.9 KB Created: 2021-04-01 03:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 461020b19016a2a77153e953c6dc2ac1 SHA-1: b9abd3e260e352638da50d4c2e929a492990367f SHA-256: e0a18622908a7f9413257d224776977a6dc12e1ce77e6199b4271f5df37cc4f6
126 Risk Score

Malware Insights

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

The PDF contains numerous links to disposable domains and redirects, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/strik?utm_term=alpine+ine-w960+installation+manual
    • http://nashremont.site/napamogixewozelatidojuzr7c7.pdf
    • http://nikaold.site/daxijazederomu8hcgp.pdf
    • http://waxedeb.getenjoyment.net/levekir.pdf
    • http://tesugujinarijag.mywebcommunity.org/zurukonere.pdf
    • http://thecet.xyz/naganajogewiduvem9d.pdf
    • https://cdn.sqhk.co/vovewotutal/ghtijjd/mupajota.pdf
    • https://cdn.sqhk.co/vitimosugu/ibjjjew/weather_apps_for_android_free.pdf
    • http://xorabawik.medianewsonline.com/50905794083.pdf
    • http://zoxodur.sportsontheweb.net/attacking_network_protocols_forshaw.pdf
    • https://cdn.sqhk.co/jogekiluse/ghUjehe/nuposoramalen.pdf
    • http://gnatural.space/best_website_template_for_graphic_designerskn3wj.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • https://cdn.sqhk.co/petebeki/Qhf8b26/10771060089.pdf
    • https://cdn.sqhk.co/zuxosutuku/hhhg1hh/crowd_cartoon_picture.pdf
    • http://jirenaxapibetig.scienceontheweb.net/local_area_network_settings_disabled.pdf
    • http://vowufijetapiko.sportsontheweb.net/what_does_far_sighted_mean.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://degevojorak.myartsonline.com/pride_and_prejudice_online.pdf
    • http://muvemaxadal.onlinewebshop.net/43035439142.pdf
    • http://teropisarazo.myartsonline.com/kobalt_wet_tile_cutter_parts.pdf
    • https://fe426b01-1dd0-498a-b08e-7ec37e320b94.filesusr.com/ugd/6b45f0_89e3fdf129b14b94bd2065c12c8aecd3.pdf?index=true
    • http://kivozusemu.atwebpages.com/apoplasto_y_simplasto.pdf
    • http://biwosagamivi.myartsonline.com/how_much_is_a_55_inch_samsung_curved_tv.pdf
    • https://e39bfc17-a898-4016-ac91-fc9303c112df.filesusr.com/ugd/b5068a_0331d4fbe9ee4493a33a8ebdafef94e7.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e094.bin
e308c798158b3613283494200bb8fddf864d1adac25411aad6aa2292debcf096		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE094 5316 bytes
font_01_sfnt_off0000f2a0.bin
6ac26362ac54d88f228ab73ab57c33c41135a4cc6ae872fdcf2ab0ba3c95defe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A0 11168 bytes
font_02_sfnt_off000117ca.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117CA 4324 bytes

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