Malicious PDF — malware analysis report

Static analysis result for SHA-256 6243816c56d67e47…

MALICIOUS

PDF

357.4 KB Created: 2022-03-26 15:58:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: fda6ca81c9edbcae5d4938a7a65f7d61 SHA-1: e27b30377095a9efc3b4576c73df316d9d15b0ab SHA-256: 6243816c56d67e47754f044dc648f5f0a8d22a6ce20556226025203fde0b9e33
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9587

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=index+of+westworld PDF link annotation
    • https://lenaoyunlar.net/calisma2/files/uploads/46053038676.pdfIn PDF document text
    • https://speedwayinfo.hu/uploads/file/fivukagokodovolad.pdfIn PDF document text
    • http://zsdbiopharm.com/upload/files/duwujedolosoza.pdfIn PDF document text
    • http://ylpqzl.com/ckfinder/userfiles/files/27299838046.pdfIn PDF document text
    • https://sakkestadbil.no/userfiles/file/1925923940.pdfIn PDF document text
    • http://sablinproperties.com.bd/public/admin/assets/ckeditor/kcfinder/upload/files/nakoruxer.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1621d5211a6dbe---rirarokejuvobo.pdfIn PDF document text
    • http://traktor-tv.de/sites/default/files/file/mamojidenam.pdfIn PDF document text
    • http://www.jatekkalmesevel.hu/admin/ckeditor/kcfinder/upload/files/11166243281.pdfIn PDF document text
    • http://cutskytools.com/d/files/gejeduvanif.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/titeduxodipibutised.pdfIn PDF document text
    • http://yhbinternational.com/userfiles/file/zudikew.pdfIn PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/66400156931.pdfIn PDF document text
    • http://noavarservice.com/ckfinder/userfiles/files/68673413936.pdfIn PDF document text
    • http://shinhwajudan.com/userData/board/file/fixida.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620e0f45d2d3d---60092751506.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/162065dff9f0c5---labepilelufazete.pdfIn PDF document text
    • http://melody-house.ru/kcfinder/upload/files/lalakowodetafegeloketu.pdfIn PDF document text
    • http://chronoflex-dz.com/app/webroot/assets/js/kcfinder/upload/files/sitexagen.pdfIn PDF document text
    • https://middle.ru/media-temp/img/uploads/files/sufovuzurelafobeladariga.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_off000528be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x528BE 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00053fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53FDE 10232 bytes
SHA-256: 5e8e6b4051af835f05ab420a074768ca33dfadb49c61bf1ec9cc6e520b9ab59c
font_02_sfnt_off0005570b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5570B 18520 bytes
SHA-256: 485c3145fb3235984dcda465bbcb53b9242b8c587c767e4926bbf6fd09f208a7