Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd780b5d9f6437bf…

MALICIOUS

PDF

315.7 KB Created: 2022-04-04 23:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 6cc3bda5a0acb72775e194182f6230b0 SHA-1: 37d0956e48597d0f57ab4d97987a7497f7c75895 SHA-256: cd780b5d9f6437bfa6a680211bfb9115ef0ac2bc9b8a23e0c0885db934e18918
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7494

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=basic+nihongo+tutorial+pdf PDF link annotation
    • https://kufurana.weebly.com/uploads/1/3/1/4/131482954/7911d8e0398727.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/mefowokora.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/24767575939.pdfIn PDF document text
    • http://vormsel.eu/admin/ckeditor/kcfinder/upload/files/gujimakapiwumufidesebugab.pdfIn PDF document text
    • http://shop-cartuning.pl/userfiles/file/97530102389.pdfIn PDF document text
    • http://apexemergencias.com/images/files/4259650834.pdfIn PDF document text
    • https://xuduzaximebawu.weebly.com/uploads/1/3/5/3/135315026/146532.pdfIn PDF document text
    • https://wokonupojelofa.weebly.com/uploads/1/3/5/3/135351156/f36439478.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///20223214454628.pdfIn PDF document text
    • https://xigunokitipir.weebly.com/uploads/1/3/4/6/134615451/3556613.pdfIn PDF document text
    • https://jijavizoj.weebly.com/uploads/1/3/4/5/134582380/xegisidejegaguxi.pdfIn PDF document text
    • http://tourtraveltalk.com/app/webroot/js/kcfinder/upload/files/96783819093.pdfIn PDF document text
    • http://architettotoma.it/userfiles/files/73664575694.pdfIn PDF document text
    • https://gemwares.artchy.com/userfiles/file/35846758264.pdfIn PDF document text
    • https://ranixujofenak.weebly.com/uploads/1/3/4/0/134016935/xugub.pdfIn PDF document text
    • https://bikawinudom.weebly.com/uploads/1/3/4/5/134595305/390869.pdfIn PDF document text
    • http://studiofelician.com/userfiles/files/wunarawerazigumodupifawu.pdfIn PDF document text
    • https://frischgeschluepft.de/kcfinder/upload/files/rebumokokesuso.pdfIn PDF document text
    • https://sujeliduk.weebly.com/uploads/1/3/4/5/134584652/808b02a9b7e0ba9.pdfIn PDF document text
    • http://ckgminaustka.pl/files/files/3703906644.pdfIn PDF document text
    • https://poxawakepuk.weebly.com/uploads/1/3/1/6/131606289/notoguj.pdfIn PDF document text
    • https://for-auto.dispaco.ro/userfiles/file/jowariraketup.pdfIn PDF document text
    • http://candientushinko.com/images/file/zisipaxoxebanas.pdfIn PDF document text
    • https://cissud.it/uploads/ck_editor/files/josurowuzaporaxujagaz.pdfIn PDF document text
    • https://aquamedicasatumare.ro/ckfinder/userfiles/files/mebaposaruwa.pdfIn PDF document text
    • http://iehyun.com/editorupload/file/burop.pdfIn PDF document text
    • https://xudodezepemixol.weebly.com/uploads/1/3/1/3/131398406/5554076.pdfIn PDF document text
    • http://algarestofos.pnh.pt/js/ckfinder/userfiles/files/36078431262.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 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_off000477b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x477B3 10920 bytes
SHA-256: 7a0ca12cd7e16e06bf6a44b4a7e8b54e2b8be4e5142175892cd2634721c00202
font_01_sfnt_off000490be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x490BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0004a8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A8D0 20848 bytes
SHA-256: 38f82e84a2d71dac592572674feb39831ae1aa92c70e892f5a8fb5ea3d8d5896

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