Malicious PDF — malware analysis report

Static analysis result for SHA-256 4259353b3c4125bb…

MALICIOUS

PDF

71.3 KB Created: 2021-09-02 09:34:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 1195218d6c43eab7ce38c1ead546ac1a SHA-1: 7ae59281dac4b40d77dac9fcf9c6add85213949c SHA-256: 4259353b3c4125bbda79205fa745a71ba96a26b9508c39251d6cc9429b3d71e8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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://philabc.ru/uplcv?utm_term=how+to+dive+down+in+gta+5 PDF link annotation
    • http://thegroverestaurantnj.com/userfiles/files/jebipakogosebezakole.pdfIn PDF document text
    • http://synphabase.ch/upload/file/sudanupipotat.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/91891393074.pdfIn PDF document text
    • http://transbur.ru/admin/ckfinder/userfiles/files/gemiwatasujodevesubizad.pdfIn PDF document text
    • http://angerdress.store/ckfinder/userfiles/files/fogedovodojamezuwetozedo.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d936b2b3d9---69929801040.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/8kj2d02m6gvvscm7gfgvksbiv1/gajoloredukasapudapisita.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611ce4f6dd3fc---31728971821.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/sbbt8riq1jok4qggedn7r5kv9k/lokinevewubikefemokimises.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611883b883652---zamojatowewaguguxanon.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/32083885498.pdfIn PDF document text
    • https://mps-india.com/userfiles/files/mogivipisezajomeko.pdfIn PDF document text
    • http://laduses.nl/image/file/fawagiguxujeliki.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608c35f899477---wutajenugaxubobesasifi.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610099af0361f---vexiwesile.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/65218786886.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/ivgbinudum5k7bchj5e6q5ede5/43303879269.pdfIn PDF document text
    • http://jhroseclassof77.com/clients/45984/File/xudotopemepobuki.pdfIn PDF document text
    • http://umrllc.com/userfiles/files/ruzatipibetezasor.pdfIn PDF document text
    • http://classicalgardenornaments.com/uplds/file/zibegokazopenuf.pdfIn PDF document text
    • http://www.cenlafilm.com/siteuploads/editorimg/file/bovigezuveretow.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16075b3c19573a---99642514680.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9bd3bca03---lebutugudivipabasugo.pdfIn PDF document text
    • http://kangmeideyiliao.com/uploadfile/file///2021081919430967.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_off0000b7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF3 10388 bytes
SHA-256: ec529a6d9364480b0ec3165693e75e5f46b85bb56935214c9d92600fdc9210b9
font_02_sfnt_off0000e768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE768 16204 bytes
SHA-256: dac191c0354c78ae251c09e030612d467d1730e08594850394f8878762fdf91b