Malicious PDF — malware analysis report

Static analysis result for SHA-256 441b4d25e0dfff03…

MALICIOUS

PDF

279.8 KB Created: 2022-03-18 18:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: d2dcd8dbea1c6271dc0bbd859884c628 SHA-1: 43c4f3024dd0c8eae587c765bc006f65709a3915 SHA-256: 441b4d25e0dfff03e2d5e55e565f00182ba84b0b15f7c17551648101f4dd03f3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7430

Heuristics 5

  • 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.
  • 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://wirut.co.za/XSRYdR1H?utm_term=ainthu+ainthu+ainthu+video+song PDF link annotation
    • https://k-barrierfree.com/FileData/ckfinder/files/20220217_612AADA56E5B50CD.pdfIn PDF document text
    • http://www.conepe.org.br/public/ckeditor/kcfinder/upload/files/rivasiwufuxi.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/18336262138.pdfIn PDF document text
    • https://basealimentare.it/webroot/files/fck_uploads/File/94562349550.pdfIn PDF document text
    • http://sangtaoad.com/uploads/userfiles/file/fululejasanedifuwewi.pdfIn PDF document text
    • http://avgustal.ru/kcfinder/upload/files/51401912410.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/72413700288.pdfIn PDF document text
    • http://pachinko-seminar.com/sites/default/files/file/68936115180.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fb61c512d6d---gagat.pdfIn PDF document text
    • https://nuttydog.hu/ckfinder/userfiles/files/mowonevakuzos.pdfIn PDF document text
    • http://webyork.co.uk/kcfinder/upload/files/46763632325.pdfIn PDF document text
    • http://helpnri.org/kcfinder/upload/files/1518451600.pdfIn PDF document text
    • https://bdayal.com/userfiles/file/nafokojo.pdfIn PDF document text
    • https://octvads.site/js/ckfinder/userfiles/files/41704780742.pdfIn PDF document text
    • https://lensprovn.com/ckfinder/userfiles/files/49351768359.pdfIn PDF document text
    • https://widepolymers.com/userfiles/file/32067942688.pdfIn PDF document text
    • http://jyotiacademicpress.org/uploads/file/81726888981.pdfIn PDF document text
    • http://shiraz.sk/ckfinder/userfiles/files/vinawadupe.pdfIn PDF document text
    • http://fine-trading-knotwork.com/uploads/media/79597816928.pdfIn PDF document text
    • http://hammaddedunyasi.com/panel/kcfinder/upload/files/81420021942.pdfIn PDF document text
    • https://talaa-obour.net/webmisr/uploadwebmisr/file/63956397683.pdfIn PDF document text
    • http://sten.kr/club/data/userfiles/file/20220211172743.pdfIn PDF document text
    • http://ipayon.com/root/FCKeditor/file/wiwadisazukoki.pdfIn PDF document text
    • http://poexali.org/static/image/_u/system/files/65184886231.pdfIn PDF document text
    • http://www.southpointinstitutehowrah.com/admin/uploads/file/17052010827.pdfIn PDF document text
    • http://thepducphat.com/upload/files/wizolamag.pdfIn PDF document text
    • http://coeb.eu/userfiles/files/82733268003.pdfIn PDF document text
    • http://albergocavour.com/userfiles/files/98516014381.pdfIn PDF document text
    • http://vinhthuanvietnam.com/upload/files/72773343977.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/19132528173.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_off0003f312.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003f312.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F312 17768 bytes
SHA-256: 0225a352acf2a3936685164a1020a200323e76edaddc8b56c3f4cac2ee6f39b2
font_01_sfnt_off000420e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420E7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00043807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43807 10528 bytes
SHA-256: db94f151171909c9ef311269e8af84e84101eafe53fa11e85b772ddcc81e5902