Malicious PDF — malware analysis report

Static analysis result for SHA-256 af21bb1d1a74eff1…

MALICIOUS

PDF

79.4 KB Created: 2022-04-15 09:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 898c21699e0f49b2eb3b5c1971f8acb4 SHA-1: 2bf38f3d6ed20e46e35f7c70e44409c2205e55df SHA-256: af21bb1d1a74eff1a2fd8d7f2ff37d4215fea5bb81622e7f8f6ae9bceb013270
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://mifuj.co.za/YmrXLWy8?keyword=microsoft%20project%20standard%202013%20download%2064%20bit PDF link annotation
    • https://tidijesugeji.weebly.com/uploads/1/3/4/7/134764535/woxuzejadelalupa.pdfIn PDF document text
    • https://jyapa.com/jhuoyue/uploadfiles/83420528072.pdfIn PDF document text
    • https://kivowitu.weebly.com/uploads/1/3/4/7/134703836/c371e83.pdfIn PDF document text
    • http://lanaecoloridabruzzo.it/userfiles/file/40780836065.pdfIn PDF document text
    • https://manusingh.org/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/fidip.pdfIn PDF document text
    • https://tewavifoma.weebly.com/uploads/1/3/4/4/134482239/51e3d.pdfIn PDF document text
    • https://kaferafodi.weebly.com/uploads/1/3/0/7/130775544/39bf33.pdfIn PDF document text
    • https://vkgnassociates.com/dayafter/uploadimages/newsimages/file/foxovatususixulu.pdfIn PDF document text
    • http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/98324003981.pdfIn PDF document text
    • https://pristineleather.com/userfiles/file/53727069385.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/zapofazegabubaxaz.pdfIn PDF document text
    • http://infoguard.ru/content/file/16641822126.pdfIn PDF document text
    • http://hoinhikhoavn.com/img/files/62005220266.pdfIn PDF document text
    • https://xovatikawe.weebly.com/uploads/1/3/4/7/134726086/xatifuxevotidiru.pdfIn PDF document text
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/ruzevexolireduwojoj.pdfIn PDF document text
    • http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/zujumebup.pdfIn PDF document text
    • http://riverside.tw/user_upload/files/24622824969.pdfIn PDF document text
    • https://twojeloty.pl/admin/kcfinder/upload/files/jonoliwonaratazuzejapo.pdfIn PDF document text
    • https://zarujiwimil.weebly.com/uploads/1/3/4/9/134900424/zomelonujevi.pdfIn PDF document text
    • http://prospekt-rostov.ru/ckfinder/userfiles/files/dipulufitititipa.pdfIn PDF document text
    • https://sgpm.krakow.pl/aaeventy/kcfinder/upload/files/bomelu.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC13D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD954 11672 bytes
SHA-256: 152a1e0586854a505b0dfb8090f4426d03efd65567eef02efc0c18eec09d49c4
font_02_sfnt_off0000f532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF532 27868 bytes
SHA-256: 9ddfc82b2e143acdbd6f1eee8220217336e14bc991dc2a0cd7ca0d9fd55c47c4

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