Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8c91c8c2a17191…

MALICIOUS

PDF

437.6 KB Created: 2022-02-19 18:23:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 1d0de622f127b7b56ec43d6501c2a5f0 SHA-1: 5120a1cd375966bd6f4002a89fea81119caef59e SHA-256: 5d8c91c8c2a17191d745030a604e2a9b943379f76afd1069d0c011a39077e64a
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3992

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://colod.co.za/XSRYdR1H?utm_term=free+printable+maths+worksheets+for+grade+3 PDF link annotation
    • http://limoride.net/gallery/file/kopaxolawuteroxebi.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160fecc74e0b45---42477632989.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618f9d5390b6b---dulorapebenuzulinajo.pdfIn PDF document text
    • http://medica-eg.com/userfiles/file/25616920477.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/50193008946.pdfIn PDF document text
    • http://armoire-atex.com/js/kcfinder/upload/files/22047729801.pdfIn PDF document text
    • https://vialivonica.eu/userfiles/files/xiwakerebazarafo.pdfIn PDF document text
    • https://begili.com/uploads/image/files/18636823384.pdfIn PDF document text
    • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/20405809643.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1614f986076755---guvuwexafos.pdfIn PDF document text
    • https://cubic.is/userfiles/file/7528251396.pdfIn PDF document text
    • http://sualpturizm.com/userfiles/file/wasajinuvipawudawi.pdfIn PDF document text
    • https://valtel.si/news_images/files/gezokusokus.pdfIn PDF document text
    • https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/donobosalolezisaku.pdfIn PDF document text
    • http://hsscp.co.uk/assets/kcfinder/upload/files/58952615751.pdfIn PDF document text
    • https://www.retake.dk/ckfinder/userfiles/files/20324330191.pdfIn PDF document text
    • https://pisangmanis.com/contents//files/gunonebegapusiluxeritilu.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/227485732.pdfIn PDF document text
    • http://gopherandsquirrelcontrol.com/admin/images/file/raguxuwusegurat.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e7e8893dd53---83604314715.pdfIn PDF document text
    • https://houseofwax.eu/kcfinder/upload/files/48454400830.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/32f937f6679c56c7e47694dd722cd9de/fokotugu.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/44246301523.pdfIn PDF document text
    • http://gazetavk.ru/img/file/22853531995.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/463681ba820be12ca48c282c0d942b61/gebudadoxez.pdfIn PDF document text
    • https://fizjolech.pl/userfiles/file/89715277647.pdfIn PDF document text
    • http://flixgolf.com/ckeditor/ckfinder/userfiles/files/47915467526.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/b5e80a4cf321660fc301f44b3b3b3a24/87986489551.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/fea9e6c71d95023d3d6652da17bfd1f8/34678156612.pdfIn PDF document text
    • http://elazentrale.de/images/uploaded/file/nagodixanedazekokofade.pdfIn PDF document text
    • https://dolmalatrek.com/userfiles/file/67922414895.pdfIn PDF document text
    • http://webminmax.com/userfiles/file/fapine.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/8b0689782c3ad1533955bfc9df4c24c1.pdfIn PDF document text
    • http://jodhpurheritagewalk.com/images/file/fazupijifubovimowuw.pdfIn PDF document text
    • http://ichieh.tw/uploads/files/202109040857022753.pdfIn PDF document text
    • http://wawa757.com/uploads/files/niziv.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_off0006641a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6641A 11412 bytes
SHA-256: bc8734811df7180c7a5908fa5f368d0eb91b409de22d0c5cd7db468c84dd4ce9
font_01_sfnt_off00067e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E75 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00069590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69590 18540 bytes
SHA-256: b64f7beaf30eea57d3994cc39456793c6cf7c8516588ac456077363af7a13521

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