Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e259b26f77f458…

MALICIOUS

PDF

79.1 KB Created: 2021-04-15 16:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b23119898e1b7eab145ffba0040baf2 SHA-1: 4d3fd677882f629c1c38ecdb8b5e50508e41b21a SHA-256: 05e259b26f77f4583bf02cbe5910a525196232861cd35c8b8618c38cece99f98
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to cutting natural stone, directing the user to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit user curiosity and lead them to a compromised site.

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://dafemum.ru/strik?utm_term=can+you+cut+natural+stone+with+a+tile+cutter
    • http://repair-telefonov.ru/area_unit_conversion_chartohoo7.pdf
    • http://ligumexijigab.getenjoyment.net/what_are_examples_of_language_conventions.pdf
    • http://stroy-level.ru/ferrari_logo_wallpaper_for_android2jpc6.pdf
    • http://lajodibibodi.getenjoyment.net/sistema_bethesda_para_informar_citologia_cervical_2020.pdf
    • http://ruwazumusef.scienceontheweb.net/kate_chopin_the_awakening.pdf
    • http://tronreserve.online/normal_snacks_that_are_gluten_freeqghxu.pdf
    • http://wejowadizabudex.mypressonline.com/business_plan_for_startup_business_template.pdf
    • http://vzruvayarttraff.xyz/my_samsung_refrigerator_ice_maker_isnt_workingdoupq.pdf
    • http://mekujoviwe.mypressonline.com/definicion_de_alantoides.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/65f9e74d-d3b9-4a39-abb5-d337885edfce/50013393012.pdf
    • https://s3.amazonaws.com/kabisebax/new_cholesterol_guidelines_2018_calculator.pdf
    • https://uploads.strikinglycdn.com/files/ffaf7c14-7253-4479-bd42-928e64e299c2/64681527996.pdf
    • https://uploads.strikinglycdn.com/files/804400cc-ef4a-4328-b9ca-256f4f11eeb0/logasemenitobeva.pdf
    • https://uploads.strikinglycdn.com/files/3d7bf568-8b9e-4d28-bf43-e9d41183c1b4/fubumirotixiwiwag.pdf
    • https://uploads.strikinglycdn.com/files/a35264d6-d3b0-4243-bee6-63b2a4be1eb7/how_to_design_my_interior_of_house.pdf
    • https://uploads.strikinglycdn.com/files/0a02a44e-e49c-4ef2-b134-f45a486ce1eb/suzafabusolavezotokomawat.pdf
    • https://s3.amazonaws.com/tawosutosuxi/nowukas.pdf
    • https://s3.amazonaws.com/rikolesafuwofar/how_do_i_become_a_refrigeration_technician.pdf
    • https://s3.amazonaws.com/waduzirader/real_madrid_vs_ajax_1-_4.pdf
    • https://uploads.strikinglycdn.com/files/80413731-732d-4448-816a-aec479d9c454/siximolo.pdf
    • https://uploads.strikinglycdn.com/files/26ebcb7b-f3b6-4b6f-9961-102d900dbf7c/bofosaviwuwefo.pdf
    • https://uploads.strikinglycdn.com/files/8e53ffbd-e2e0-4014-8f20-b3d40e83b8e9/active_and_passive_voice_worksheets_for_8th_grade_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/6942b2f2-0f1a-423a-a6f0-e01d8332eb11/does_canon_pixma_mg3050_support_airprint.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_off0000fad9.bin
9592e27a4d9c9edffc7d052bcc83084785ba6be498502bc9a15ee95d237d8b10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD9 4984 bytes
font_01_sfnt_off00010bd6.bin
df3ae3a6addc573177b7df9f36983a33aa72bebfbe30ef31eee60ef87d3c3a77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD6 10284 bytes

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