Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afd4a22d8f56bf8…

MALICIOUS

PDF

80.0 KB Created: 2021-09-07 21:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 88e95794b0b604a6b9254b9b938f205f SHA-1: 87c6c88ee606575fc663bd54204f9d9f7e101b52 SHA-256: 4afd4a22d8f56bf8fa020f6ae965070a770342e3e244910c2f288bef4e251418
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://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611aa5a9de64f---fifitusutoxuwafutasosejo.pdf In PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/6aeb4ac0572edb07a10ec4a8f8472b40/darogekomusaje.pdfIn PDF document text
    • https://renetravel.ro/images/files/pisopasozepelevazu.pdfIn PDF document text
    • https://genia-groupe.fr/images/files/7309047051.pdfIn PDF document text
    • https://vargyasnekonyveles.hu/kepek/other/file/duvimuxekopega.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16131cd674bf23---99415793766.pdfIn PDF document text
    • https://spcinternational.in/ckfinder/userfiles/files/gupusopetupo.pdfIn PDF document text
    • http://eurogeographyjournal.eu/admin/fckfiles/file/59432041020.pdfIn PDF document text
    • http://ykzn8.com/upfiles/editor/files/95110211056.pdfIn PDF document text
    • http://chemicalengineers.ie/images/poxenekazubive.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/m1775rkuat73p4rffpv269hr64/14982115050.pdfIn PDF document text
    • http://menifee.hanasushichoice.com/uploads/files/69677270920.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/vomesizusitalonewixa.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b6191eef5c3---17988876905.pdfIn PDF document text
    • https://barcelonamedicalcenter.com/files/galeria/files/fonaxojisotu.pdfIn PDF document text
    • http://bippex.com/filespath/files/20210901011735.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/56493062556.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610cbde25b2b5---jukifipobezet.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/10675631745.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/7d07dc470860a0417c3fa298e481f7c9/89774514098.pdfIn PDF document text
    • http://efrex.cz/files/file/63935170151.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6363216820---36833393965.pdfIn PDF document text
    • https://anakmeong.com/contents/files/pivoposolopimapivipigimo.pdfIn PDF document text
    • http://wych123.com/upload/files/21503814080.pdfIn PDF document text
    • http://forumcutuca.com/ckfinder/userfiles/files/xekulufetaxowososamevit.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=download+mpdf+designerPDF link annotation
    • 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_off0000d3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ebc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC1 10828 bytes
SHA-256: 8a7c9ae479c924bedf44272723c837dad001cc09eeea8a860b59a5157d70e54e
font_02_sfnt_off0001047c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047C 17564 bytes
SHA-256: 3b50eaa93dfeb9b45bdfe66c60c500ee875d24c6e2a3c5fc36d4cfd8535bd7fe