Malicious PDF — malware analysis report

Static analysis result for SHA-256 5acb1bcc18389f9c…

MALICIOUS

PDF

69.2 KB Created: 2021-03-04 15:33:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8356e0fb07d7e431a201d9f3bf792d58 SHA-1: 9da357e5733c5aa940cdcde5003c64cb3a3c4bba SHA-256: 5acb1bcc18389f9c12c6309dc9a0a22c7a0f2ca8179063dd13a47e123a6e9aa1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/award?keyword=louisiana+common+core+standards+ela+kindergarten PDF link annotation
    • http://zoo-taxi.site/102752305343e3da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_6020fc9d6f0a7.pdfIn PDF document text
    • http://vixemifojetinag.sportsontheweb.net/bofanuname.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459774/normal_6026081e181c3.pdfIn PDF document text
    • http://ninuxalezopo.getenjoyment.net/arkansas_learners_permit_passenger_restrictions.pdfIn PDF document text
    • http://daliadiago.com/68536112542et6z5.pdfIn PDF document text
    • http://uggi-ugg.com/24540490456wepc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451945/normal_5ff5ee2369251.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/icghK34/25253778905.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/Hjhjgjd/battleship_north_carolina_wilmington.pdfIn PDF document text
    • http://zatutajijiti.getenjoyment.net/arduino_web_ide_esp8266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425727/normal_6012c69cc5d9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_60189f2f60d1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445320/normal_5fd6313b4ecb5.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/ijcjma0/girago.pdfIn PDF document text
    • http://hookup754.fun/red_war_exoticszvv0y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464056/normal_6021ee1ce8019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386081/normal_6002a1eea472e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447663/normal_6032b1cd740c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/92c7634e-6ccc-4889-803b-a1717aa46af8/gefiguborekaroboles.pdfIn PDF document text
    • http://zotubune.myartsonline.com/nursing_theories_and_models_hugh_mckenna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e476828-407d-42ad-bcd1-2b3b6917690b/ford_mustang_shelby_gt500_super_snake_for_sale.pdfIn PDF document text
    • http://fuguzametekobo.myartsonline.com/misavifakosu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD432 5264 bytes
SHA-256: 3115ac321395529dfef3e2fc88ae4b18babdfbb65b33dfcc08c835f2fdb4fcc8
font_01_sfnt_off0000e601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE601 9704 bytes
SHA-256: 4ff7afe3436a824b5c8165f5fcdd95a09173944380cc267e01361016bf14a4cb

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