Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8b05e302b3c9c7…

MALICIOUS

PDF

69.9 KB Created: 2021-02-13 00:47:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d397a6f13c00faed40d9d8dec511516f SHA-1: ecce519da69febf1341d9d09b7ace72f1a6bd031 SHA-256: 8b8b05e302b3c9c793c272a51a5cfab44fabf5158a08466bac0a03826cb568c8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=mens+bell+bottom+jeans+near+me PDF link annotation
    • https://cdn.sqhk.co/wiluxuko/jiL48qq/44583247005.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483365/normal_602183a160b69.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/zakafex.pdfIn PDF document text
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/2adba23836.pdfIn PDF document text
    • https://xitititoludazo.weebly.com/uploads/1/3/5/9/135987602/960c0467.pdfIn PDF document text
    • https://cdn.sqhk.co/medasozuf/3hfhanE/way_of_retribution_awakening_apk_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/wukufazujuv/j1Siejg/kavefijojodajizakuxez.pdfIn PDF document text
    • http://zamuxodub.22web.org/alveoli_are_formed_from_what_tissue.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421612/normal_5fefcc97ed9cb.pdfIn PDF document text
    • https://cdn.sqhk.co/latosagax/Kkgjfhj/remamisanerureduka.pdfIn PDF document text
    • https://jokiputukalak.weebly.com/uploads/1/3/1/1/131164130/7f574f1a982e.pdfIn PDF document text
    • https://dasatupulike.weebly.com/uploads/1/3/4/1/134131314/roxuzupunaf_jojovokokon_riluzitesad_bowewaruwojejef.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/icuo4ii/color_cut_3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bepizokebador.epizy.com/ib_biology_book_2014.pdfIn PDF document text
    • http://lopaxoreje.rf.gd/2045247312.pdfIn PDF document text
    • http://budevoniv.rf.gd/mikrotik_750gl_datasheet.pdfIn PDF document text
    • http://potelodifudoduj.epizy.com/83215352772.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_off0000d475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD475 5052 bytes
SHA-256: f8cddc34e48654248633b08a4c09f2dd0030fa6cc1011868fd20696209994930
font_01_sfnt_off0000e591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE591 10752 bytes
SHA-256: 67761ad5b557823036468c4b255c7f2285cd1e47f9b2d52dc13d5190b102c54d

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