Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b9de1bc170c3e4…

MALICIOUS

PDF

80.6 KB Created: 2021-09-21 02:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: e3582b44fa5abe2ed6b95ec5ef9391db SHA-1: 5d617581438c2c056d722520c12c091ad34f850d SHA-256: 72b9de1bc170c3e4aa6d59a1b0f207b81051faa74cc9428e712eaa3d2019bb9a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://crysiq.ru/uplcv?utm_term=libros+medicina+pdf+gratis PDF link annotation
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/d22101816f964b9b9661be28f1aae03e/jibeje.pdfIn PDF document text
    • http://88cpap.com/userfiles/files/vafufoj.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16148a7bce893a---garisekupap.pdfIn PDF document text
    • https://indicaperu.com/userfiles/file/60840471707.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/jikedadazorimigamovudux.pdfIn PDF document text
    • http://blfimmobiliare.com/userfiles/files/dabubumij.pdfIn PDF document text
    • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/riner.pdfIn PDF document text
    • http://cbcom.eu/ressource/site-image/files/mularabozu.pdfIn PDF document text
    • http://e-menu.hu/editor_up/rutujedewatabozaniro.pdfIn PDF document text
    • http://naitikfashions.com/ckfinder/userfiles/files/32246699553.pdfIn PDF document text
    • http://hanasushi6.com/uploads/files/xotadorusidutalivekiwodo.pdfIn PDF document text
    • http://kag.fr/userfiles/file/zeposatuderux.pdfIn PDF document text
    • http://www.udelimpa.es/ckfinder/userfiles/files/watavepifusar.pdfIn PDF document text
    • http://thegioimercedes.com/upload/files/44500091147.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613e97fdc74eb---raxekilubenupaxizenitiwu.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/94bd2fade2fe7e42ecfd9f9d8c156191/93233837500.pdfIn PDF document text
    • http://nb-magnet.com/upload/files/joxagopasimafovuzitula.pdfIn PDF document text
    • http://doubles301.jp/files/ckeditor/files/98448161456.pdfIn PDF document text
    • http://sieuthimaynhapkhau.com/upload/files/66683075098.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/jopigulofemi.pdfIn PDF document text
    • http://de.ruben.pl/ckfinder/userfiles/files/fizowadisalo.pdfIn PDF document text
    • http://studiosaletta.it/userfiles/files/49984351014.pdfIn PDF document text
    • https://grdr.org/paidel/ckfinder/userfiles/files/jolezoxebozodita.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/giwoteri.pdfIn PDF document text
    • https://ijtm.in/userfiles/file/40452421474.pdfIn PDF document text
    • http://czpohledavky.cz/userfiles/files/20577530904.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_off0000d457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD457 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC69 18308 bytes
SHA-256: 297d1ba2b509a7184a90fd51edd77eca700c6dc4fb82cc57b28dab7387b380d6
font_02_sfnt_off00011b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B56 11016 bytes
SHA-256: 359d49c2b35ce59631f34b17cd97f95ca590c4a4596580f44525064fe086e355