Malicious PDF — malware analysis report

Static analysis result for SHA-256 740e2904f383e929…

MALICIOUS

PDF

70.6 KB Created: 2021-03-13 22:45:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 788dd52d1c0661264d39b590772eb868 SHA-1: c700516e478e4cf9dd1f787de8d7cebc27d4af52 SHA-256: 740e2904f383e92904e277731e9fc857ff2b6956504e0d92aad0605a98703ed6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/award?keyword=razones+trigonometricas+de+angulos+suplementarios+ejercicios+resueltos+pdf PDF link annotation
    • https://cdn.sqhk.co/mujawiru/QgjZigt/3318630078.pdfIn PDF document text
    • http://hempmap.ru/rumatosijojegivjf5nn.pdfIn PDF document text
    • https://cdn.sqhk.co/dedomafub/f6hovhf/turn_off_roaming_on_samsung_gt_s5230.pdfIn PDF document text
    • http://startbastar.online/can_t_help_falling_in_love_kalimba_tabss40f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420743/normal_5fdc67e94e15c.pdfIn PDF document text
    • http://uscreditmonitoring.info/13_original_colonies_map_worksheetc920q.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/thermador_range_error_code_e6100.pdfIn PDF document text
    • https://cdn.sqhk.co/lawipavoso/gd46hfE/retiruzomevopaledixina.pdfIn PDF document text
    • http://newuwedeza.mypressonline.com/37601682279.pdfIn PDF document text
    • http://miwuzobi.sportsontheweb.net/42724218906.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500446/normal_5ffd2af20da14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_e697a657aadc4c5f851e936b3fce63cc.pdf?index=trueIn PDF document text
    • https://6d4a8fb0-9a8a-4850-8aa1-2b5706121c9a.filesusr.com/ugd/ff2e72_1255e84e97c346dc86d22e32fde6ce5c.pdf?index=trueIn PDF document text
    • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_1ba2622a44a347bb80da2e612d0d7e94.pdf?index=trueIn PDF document text
    • https://8860adff-7f0b-4cf3-a358-cdd560dff136.filesusr.com/ugd/625844_bc43e105fc69488d9031e5e7ed6628db.pdf?index=trueIn PDF document text
    • https://edefa294-c65c-46c5-840b-8a4669b9fdfe.filesusr.com/ugd/e4a001_81363d41086042d6aa78e8311b2773b1.pdf?index=trueIn PDF document text
    • https://a181bb3e-7445-4f1f-a1cf-b2fe66c13e92.filesusr.com/ugd/91ce54_403d1c8c24fc4c91accc07b3be2dcd8a.pdf?index=trueIn PDF document text
    • https://2f8a6ab9-e864-4757-b083-6627a13f4c48.filesusr.com/ugd/405339_53d80b29811447e68d1b70a803540f82.pdf?index=trueIn PDF document text
    • https://7a3463bf-3117-47cc-940f-ad9d50d05675.filesusr.com/ugd/9f2514_33cc8bf5443c46ae98b4e6ab2750098b.pdf?index=trueIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_043648cd7d33482e96e032cb6c2c523b.pdf?index=trueIn PDF document text
    • https://ecf8b3bd-8201-449f-a39c-156acd88681e.filesusr.com/ugd/97634b_786379e72cff497e9e8c951136d5098b.pdf?index=trueIn 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_off0000d01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD01F 5608 bytes
SHA-256: 2593d8be5acb525e585e13c29a2562fe940fef5ea766748dc0faacac62ab2573
font_01_sfnt_off0000e332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE332 11796 bytes
SHA-256: 1db1354774b2c3bccf3e8e42180203e96d762f7543008989fbf0d49cafefb85b

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