Malicious PDF — malware analysis report

Static analysis result for SHA-256 478ab0b76d8f78f4…

MALICIOUS

PDF

271.9 KB Created: 2022-01-19 12:11:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: c526ffdc10b50002e4ae2027dc0a1664 SHA-1: aa40a382c7b3b4e0a3653766b3fbc6cf9020d054 SHA-256: 478ab0b76d8f78f4ecc9abb01be5405d0bc84189db2af228617572f5baefe227
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7018

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://smidgel.ru/uplcv?utm_term=nice+guidelines+copd+fev1 PDF link annotation
    • http://gyndoktors.de/ckfinder/userfiles/files/25467525518.pdfIn PDF document text
    • http://restaurant-lyons.fr/userfiles/file/zejiladibififekiwinuxu.pdfIn PDF document text
    • https://hinodanang.com/uploads/image/files/20798763619.pdfIn PDF document text
    • https://ita.kru.ac.th/ckfinder/userfiles/files/52244021561.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/2a2cdb6780e25f8dce9fdd7a47ff872c/vaminijinixob.pdfIn PDF document text
    • http://chothuexehochiminh.com/userfiles/file/tewosidisozidiwajip.pdfIn PDF document text
    • http://comp-art.ru/userfiles/file/nisogujumawapezek.pdfIn PDF document text
    • https://techielingo.com/fck_uploads/files/53564701160.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619316fe79760---67065607712.pdfIn PDF document text
    • http://www.cpl.odrolnika.pl/kcfinder/upload/files/71351403485.pdfIn PDF document text
    • http://zartmobilia.com/userfiles/file/20211024073118.pdfIn PDF document text
    • http://ventiliatoriai.lt/js/ckfinder/userfiles/files/34754802722.pdfIn PDF document text
    • http://livestocktool.com/d/files/loreb.pdfIn PDF document text
    • http://wbdo.pl/userfiles/file/fixujusemadulemesavokarel.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/58740624578.pdfIn PDF document text
    • http://vimbark.sk/editor_uploads/files/25522065997.pdfIn PDF document text
    • http://stefanourso.com/public/userfiles/file/32118654479.pdfIn PDF document text
    • http://www.anespo.pt/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/44415541433.pdfIn PDF document text
    • http://leicesterbiketec.com/userfiles/file/jiteto.pdfIn PDF document text
    • http://sushrutproctology.org/ckfinder/userfiles/files/92528332145.pdfIn PDF document text
    • https://ldoris.com/upfile/files/20220119180644.pdfIn PDF document text
    • http://sromedical.com/file_media/file_image/file/finazevoregaloj.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/tuxogiwugeridukedelegeko.pdfIn PDF document text
    • http://kezheng.net/Upload/file/fipufarorisedemitozodan.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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003d00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D00F 18936 bytes
SHA-256: 72f87eb762a4f888b04dd9113c17c46048f97dcc82fe21a19060fdcd117b7c81
font_01_sfnt_off00040162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40162 10628 bytes
SHA-256: 1b18f124e3a1ba046cd04162e629f66a1cbd6e4eb8b23ea7f7cd25ac3eb749ed
font_02_sfnt_off000419a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x419A6 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336