Malicious PDF — malware analysis report

Static analysis result for SHA-256 93cf77ffe61a64b3…

MALICIOUS

PDF

232.1 KB Created: 2021-12-28 22:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-13
MD5: f4236191faafc8ae33c0bb101cec4817 SHA-1: 65ff47f07d663d34f6de05acf4d013424affd92e SHA-256: 93cf77ffe61a64b305117bf094b4fce4fa03bd2489aa5ff7579a3eed8055dddc
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8564

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://koparieshorvathbusz.hu/files/file/dufevefepurixezukinut.pdf In PDF document text
    • http://xn--h1acbpobggs.xn--p1ai/data/files/rapotagatefuzap.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/rebosezoremejatotet.pdfIn PDF document text
    • https://stichtingech.org/ckfinder/userfiles/files/77587915048.pdfIn PDF document text
    • http://eyupsifalibitkiler.com/resimler/files/zotidixawupa.pdfIn PDF document text
    • http://xn--12cm8caae5d9a0a0a1dxk6dd.com/user_img/files/64301505902.pdfIn PDF document text
    • https://mklaassen.nl/images/file/xufuror.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616239f2aab66---dofitivogurawitob.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/ravajabosagivogefapaxi.pdfIn PDF document text
    • http://ifaistos.reality.gr/~triantaf/images/file/pimivovufazewigozi.pdfIn PDF document text
    • http://www.gulbaharsigorta.com/contentData/file/27927443666.pdfIn PDF document text
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/wukevovarelakutenapuril.pdfIn PDF document text
    • https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/tutatexepam.pdfIn PDF document text
    • http://imobilestore.de/userfiles/file/87961527345.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16195a8c9436a8---15451841412.pdfIn PDF document text
    • https://lawtutors.co.uk/js/ckfinder/userfiles/files/nojodorozap.pdfIn PDF document text
    • http://chanhbon.vn/media/ftp/file/1323687249.pdfIn PDF document text
    • http://veiligheidssloten.nl/ckfinder/userfiles/files/jaxevonerodavudinadadugep.pdfIn PDF document text
    • http://xn--bqrr0jw6bmw2g.com/userfiles/file/1637630155.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/rapovulosililupatero.pdfIn PDF document text
    • http://ontis.sk/editor_uploads/system/files/sejaxoxovovogonixed.pdfIn PDF document text
    • http://bdn10.cz/files/file/dizikewud.pdfIn PDF document text
    • http://learnazia.com/fck/imagesfile/mexugeferotatexi.pdfIn PDF document text
    • http://cmsrecuperocrediti.it/images/file/569628188.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/RC0zOYPQW8A/uplcv?utm_term=android+emulator+amazon+app+storePDF 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 extracted file (font_00_sfnt_off00033815.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00033815.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00033815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33815 16404 bytes
SHA-256: d699c8276ef8c53d0492941ee2dc4050e336716201b8ce86b21dc6fdb3589ca9
font_01_sfnt_off00036241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36241 10692 bytes
SHA-256: e6a9249cdf754ccc11e3a61c423a0aa214d89d17edc2bdb215b613500c88ec15
font_02_sfnt_off00037ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37AD0 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336