Malicious PDF — malware analysis report

Static analysis result for SHA-256 441ca346eaca400c…

MALICIOUS

PDF

276.6 KB Created: 2022-02-07 09:30:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 06861f4f571f8def66a6b40ff5b13cc6 SHA-1: 83e0e717139d392ead428653bbd1af2b9d4ad973 SHA-256: 441ca346eaca400ca1c9c9b2b89c6d2a192952565764e2bd1169c1bb1ff1a0f3
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=free+printable+least+common+denominator+worksheets PDF link annotation
    • https://atpl.aero/ckfinder/userfiles/files/golemeromud.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/1953a1c089b904ed1316acb5f821b764/85179653457.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/mapanilaxinumadotiv.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16112bbc07f38d---70833374985.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fb05cb5aab6---32349870525.pdfIn PDF document text
    • http://abb-impuls.su/kcfinder/upload/files/11133991011.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161cb53786fbb0---jofivujewuwafizugideroti.pdfIn PDF document text
    • http://upservice.expert/admin/ckfinder/userfiles/files/fetamepu.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e489580b5fc---53485664759.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/794va5mhag4jn829clnpgqfni6/zunabanopakijesofabo.pdfIn PDF document text
    • http://ttfi.org/app/webroot/userfiles/file/84942189457.pdfIn PDF document text
    • http://sjanzee.nl/file/rozuxawevevotikunur.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1616d9762b29cb---67748253000.pdfIn PDF document text
    • https://bkr.jetdesign.pl/files/files/wibepim.pdfIn PDF document text
    • http://khmim.com/ckfinder/userfiles/files/tonetonuniso.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f0641faae21---10309212735.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16192cdbd37ec9---97141420561.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/sidududotep.pdfIn PDF document text
    • http://www.centralperdana.com/file/45578171261.pdfIn PDF document text
    • http://goodmix-psc.com/userfiles/files/jugenavemodisas.pdfIn PDF document text
    • https://www.misti.gov.kh/public/ckeditor/kcfinder/upload/files/89631294728.pdfIn PDF document text
    • https://comlosumare.ro/userfiles/file/72318969748.pdfIn PDF document text
    • http://abrushfire.com/kcfinder/upload/files/49089573347.pdfIn PDF document text
    • https://shibbirs.com/media/files/bumanefa.pdfIn PDF document text
    • http://meetburgerusa.com/uploads/files/14152786747.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/vexupamafafo.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/3cd55a5d7f17c7c2f12fbeba297f4c71/tiladotadipuj.pdfIn PDF document text
    • http://888spirits.com/userfiles/file/niforujizumomakuritasi.pdfIn PDF document text
    • http://skomi.ru/img/files/file/mavisuzovutowenabipijura.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/wufidoradeve.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd918112cb2---kumej.pdfIn PDF document text
    • http://sspvjd.com/FileData/ckfinder/files/20211106_7A885CBF3E5AF9D7.pdfIn PDF document text
    • http://ancheng-medical.com/uploadfile/files/81733562356.pdfIn PDF document text
    • http://ciudadaniadesdeelaula.com/kcfinder/upload/files/82954158607.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 extracted file (font_00_sfnt_off0003e734.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003e734.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003e734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E734 16464 bytes
SHA-256: 631880badc5ba37e5771f3d7759148576b2dfd7f9a0018bc72ceb1c162418f3c
font_01_sfnt_off000411d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x411D1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000428f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x428F1 11076 bytes
SHA-256: 0098d79909a12985c28dbe4390c0bfda09f99bcb7cc06adcf7ca972cfd523217