Malicious PDF — malware analysis report

Static analysis result for SHA-256 44592859a471e20f…

MALICIOUS

PDF

73.2 KB Created: 2021-10-11 18:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: c3c52795d64d05dd6390606a1b240d7c SHA-1: b0ef103a9174857c70e61d0fefd186e29d09311f SHA-256: 44592859a471e20fb0b11fef742c93e7b977d70602ac34dd05df4f86db974d50
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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 http://flex-link.cn/uploadfiles/files/8921235270.pdf In PDF document text
    • http://suchanekstomatolog.pl/files/file/41161063476.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f718fa2401---pulezaperurewemerupevu.pdfIn PDF document text
    • http://dsraxys.com/uploads/vexipirezimaverome.pdfIn PDF document text
    • http://dolonchem.com/upload/files/6620562841.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613cbe6d0f1de---63842566589.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/82e3953a393f784c086bb438fb653da2/42669604779.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/ruwifula.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/16991488867.pdfIn PDF document text
    • http://lovelyspa.net/ckfinder/userfiles/files/tesoximalepituliduzur.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/85253813761.pdfIn PDF document text
    • http://falcon.dk/sites/default/files/webfm/xijide.pdfIn PDF document text
    • http://cosmosimpex.com/app/webroot/ckfinder/userfiles/files/27342795521.pdfIn PDF document text
    • http://shesob.com/file/files/zabilakedubawozedovi.pdfIn PDF document text
    • http://canxetaianhduc.com/images/file/69453006339.pdfIn PDF document text
    • https://ural-aiti.ru/admin/ckfinder/userfiles/files/mudefodabotekibolowexu.pdfIn PDF document text
    • http://mamaskitchenorder.com/uploads/files/61469152965.pdfIn PDF document text
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/64510081482.pdfIn PDF document text
    • http://netdepphunu.vn/images/userfiles/file/45857410216.pdfIn PDF document text
    • http://ytlcases.com/userfiles/file/tarifumufedapopijewa.pdfIn PDF document text
    • https://noelex22.org/userfiles/file/budediwidegunafeb.pdfIn PDF document text
    • http://yourhandmadeitems.com/userfiles/file/dimoridu.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/d78cb83ad7261d140176704d1f535eab/69989610569.pdfIn PDF document text
    • https://everywheregenes.com/uploadfile/qu26_qu106_com/files/31991420399.pdfIn PDF document text
    • https://sooryasales.com/uploads/file/5313605468.pdfIn PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/pajamepetobaxojige.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/u-9XGpgKpwY/uplcv?utm_term=breathing+exercise+for+asthma+patientPDF 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_off0000bffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFFD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD814 11036 bytes
SHA-256: e5434b34c6ce7306fa19faa89989a437c5a0875e47b1577d1aafea539b0a1b45
font_02_sfnt_off0000f1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A4 14960 bytes
SHA-256: c4738f78919fd24f1d728c1476bd1e7e1832a812394789475e8fb539ca28134f