Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3888d106bb2d31…

MALICIOUS

PDF

281.7 KB Created: 2022-03-23 04:48:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: dde119fb316939047b757459c668e2f2 SHA-1: 185b733dd9bc967e883109b6a2d66d29f54e2417 SHA-256: 4e3888d106bb2d317987bcc2819769d7c2be5931d3e17c0c302d1597a7a47bf9
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7754

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.
  • 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.
  • 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://yoyep.co.za/XSRYdR1H?utm_term=fun+run+2+spin+hack PDF link annotation
    • http://colfacor.org.ar/administrador_web/kcfinder/upload/files/65424972326.pdfIn PDF document text
    • http://laiyi-art.com/userfiles/file/59199320124.pdfIn PDF document text
    • http://santiagoporter.com/js/ckfinder/core/connector/php/files/95701393056.pdfIn PDF document text
    • http://karpatskiles.ru/store/file/93325685895.pdfIn PDF document text
    • http://megalaserasia.com/upload///lakiniperap.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/161ff211437df0---powamegemaluz.pdfIn PDF document text
    • http://ms-krmelin.cz/app/webroot/files/files/21037164791.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e55b18a2cf---50858888127.pdfIn PDF document text
    • http://accuway.yun2u.com/upload/files/78163462924.pdfIn PDF document text
    • http://mdbim.pl/ubezpiecz/obrazy/file/geketitiditaradol.pdfIn PDF document text
    • https://ndmoyun.com/calisma2/files/uploads/28683564066.pdfIn PDF document text
    • https://www.l-games.jp/js/ckfinder/userfiles/files/kakitiwidubokiwiri.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/1b66a36deec1b503b0a6e6ae73bd62c1/87882308414.pdfIn PDF document text
    • http://ekonopuntos.com/campannas/file/nedulotoduninut.pdfIn PDF document text
    • http://www.luchpain.ru/kcfinder/upload/files/bimawekowikaxonesodiriker.pdfIn PDF document text
    • https://mandarinusa.com/userfiles/file/1646023971.pdfIn PDF document text
    • https://mmgrowersg.com/ckfinder/userfiles/files/podovuluke.pdfIn PDF document text
    • https://drproperty.org/userfiles/file/zipizejatafil.pdfIn PDF document text
    • http://exekuce-majetku.cz/kcfinder/upload/files/33301444005.pdfIn PDF document text
    • https://urudolfa.sk/upload/files/kugikinapa.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/11706012925.pdfIn PDF document text
    • http://zentrumok.com/userfile/files/93339526847.pdfIn PDF document text
    • http://pkpneu.cz/userfiles/file/70175569756.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/8mn8u716qjkm2ja1roag6utapr/9473542882.pdfIn PDF document text
    • http://chmer.yun2u.com/upload/files/4608553098.pdfIn PDF document text
    • http://kaizenlife.com/ckfinder/userfiles/files/soxuvulonasop.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_off0003f698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F698 19384 bytes
SHA-256: 2d02b49b4f35e2d87a7431819ed340a92ee19f6aa7475520eec6d2b9a7f3aea6
font_01_sfnt_off00042a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42A08 10364 bytes
SHA-256: 4d6e3e3a78ed8a80fdad8bb2c22fb6fa14c8c1100225148da6d6a16aeb6cc09f
font_02_sfnt_off00044163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44163 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9