Malicious PDF — malware analysis report

Static analysis result for SHA-256 6865fd97dca37bcc…

MALICIOUS

PDF

72.7 KB Created: 2021-03-15 19:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8b9fbe893b36293f96f6cfdff35271bb SHA-1: c4f24412ed9c31f711cbc31cd4c93d900b9c67ef SHA-256: 6865fd97dca37bcc7bc17a02ddf1a8d083786a00a4617be02177dc675a0e4f4f
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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://xojakonokixamu.weebly.com/uploads/1/3/1/1/131164577/jirub.pdf.
  • 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/wix?keyword=illegal+gun+parts+terraria+wiki PDF link annotation
    • http://tosatosekux.22web.org/career_paths_information_technology_vk.pdfIn PDF document text
    • https://xojakonokixamu.weebly.com/uploads/1/3/1/1/131164577/jirub.pdfIn PDF document text
    • https://kapavumir.weebly.com/uploads/1/3/5/3/135313873/84a89cb2430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481061/normal_5fe9eeb72c4b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373520/normal_5feb517713a1c.pdfIn PDF document text
    • http://vonowaz.iblogger.org/dodukirolutufewowos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wokupubax.epizy.com/nuxow.pdfIn PDF document text
    • http://disupenepoka.epizy.com/94288070995.pdfIn PDF document text
    • http://sibexelopuni.epizy.com/honeywell_thermostat_rth2300b1012_e1.pdfIn PDF document text
    • https://16fd3b15-5541-4454-9538-28daacbf497e.filesusr.com/ugd/e32576_368870cbea814c8989df91f9c020a183.pdf?index=trueIn PDF document text
    • http://gatinilub.epizy.com/how_to_use_wilton_filling_tip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23fee541-09e8-4715-94c3-ffdbbe8bbdcc/play_dd_5th_edition_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c18d09c1-eed3-462c-b80f-3a8c24342d56/are_inflatable_hot_tubs_worth_it_reddit.pdfIn PDF document text
    • http://xirakogo.epizy.com/audionet_watt.pdfIn PDF document text
    • https://7a48fde5-f9d1-4ce4-84a2-8b156d245d18.filesusr.com/ugd/8127dd_3d2fbe0328d34079aec98e561467851a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd82aedd-671a-4cae-a73c-7d13cbefda57/chicken_with_gimpy_leg_quarters.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_off0000dda1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA1 5080 bytes
SHA-256: bcf37c48e2da331f3f9d3e48c1c7d04445d249708e9209e311a835f094d681fd
font_01_sfnt_off0000ef12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF12 10856 bytes
SHA-256: 643ffa173faaecdb7a8e8d17889804f98c7a51e3cc349ee58f5f7cdbcc43e3be

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