Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b489b39d8b0a277…

MALICIOUS

PDF

93.4 KB Created: 2021-06-26 07:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: bad99b3fd132f7a34cd0d6e34917ffb6 SHA-1: 0f8eca6657df1693e7b2e3c4155149e5fe55fe82 SHA-256: 9b489b39d8b0a2772e0009f7c377336e2a47dd5ea46a029b8fd9c5a6d55b6bed
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, with the numerous external URIs pointing to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://coretry.ru/uplcv?utm_term=news+in+slow+french+pdf PDF link annotation
    • http://zdrowejaja.com/Upload/file/87226172577.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/6dqdik9dqalos78hgdo3k12566/sutivowiwupopibuzeda.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/f78fb4e1fa935015b901af0d42907623/58487923400.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/121060929560a26caaea14d.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/chl1p634dkpqo92gar39p6k0r5/xonuzuvenapifufaruwatuk.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/lemorofupozubugexasukokum.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/87455970624.pdfIn PDF document text
    • http://kolaykanal.com/userfiles/files/venajufizukimubisonagux.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4430dea0b---runitivezewipa.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/28953210459.pdfIn PDF document text
    • http://mintaialuminum.com/d/files/2019502166.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160afad6ac5781---kirorexizufopemomeze.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701becb56cd---68521112847.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16086873bb3ef6---gudunanet.pdfIn PDF document text
    • https://gemwares.com/userfiles/file/birabafijopu.pdfIn PDF document text
    • http://altinay-law.com/images/file/lewexajeputulum.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/a68123894904326d08f06d817747343e/49196887074.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/91091d1df081d481fce897139e66c5e9/foxeregugijidonuroluji.pdfIn PDF document text
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/guvumulupaligajuwofavuz.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/6802795c64bec2ad06308f4c4de84936/lipasezoniloposuj.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/952857718b99a1db68b8a43b69c76c4f/tajekutaripalo.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/penizir.pdfIn PDF document text
    • https://webmenuplus.com/images/file/mogiviwogewev.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_off00010700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10700 10520 bytes
SHA-256: 09b179fcc66a5fc611c63989e8961309d56530da3eca9ba9b876560b9b86bf0e
font_01_sfnt_off00011eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EEC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000136fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136FE 19160 bytes
SHA-256: d5f64f7ad92f5827b5b2a2821148a3884e97a215be5a5dfc86eba10de294b74a

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