Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b30d37d8341cf7…

MALICIOUS

PDF

545.5 KB Created: 2022-01-02 21:36:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: d6ce3d44afd5ff3d8a8f97488430e99a SHA-1: 548f321c11be035f5c0b642b67c07d8e43835278 SHA-256: 72b30d37d8341cf7ebf6cc946bb8af8495890c06a911befedd48a579885d05a9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3851

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.
  • 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.
  • 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://ketchas.ru/uplcv?utm_term=acr+fibromyalgia+guidelines PDF link annotation
    • https://kamwalibais.com/userfiles/file/50557203910.pdfIn PDF document text
    • https://vntdc.com/upload/fck/file/13109410984.pdfIn PDF document text
    • https://dom4m.by/userfiles/files/turadamemijuxafagufine.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd7432f315---femuzisuranewerowipuragaw.pdfIn PDF document text
    • http://kolkataangikar.org/ckfinder/userfiles/files/8312267668.pdfIn PDF document text
    • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/savevamujudotorezuwesora.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/0258a10c2125a3e1b87b94aa50eb4014/43425265439.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/54914950905.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/f4e85deeb2c034a5231b171476a36a72/mumadasawitak.pdfIn PDF document text
    • http://neteyes.eu/editor_up/18118247521.pdfIn PDF document text
    • http://korowod.sdk.pl/userfiles/file/50625575154.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1619640cd5f204---tipakavigubugalerex.pdfIn PDF document text
    • http://bionazorat.uznature.uz/userfiles/file/dorekaxut.pdfIn PDF document text
    • http://fisioterapiasuzzara.it/userfiles/files/24943216717.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b7b41b7f0b8---zorowizugorajipifubo.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/3849baedd5d9eeeb867c54c591d214f3/74881209777.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161658bb451e75---29816022068.pdfIn PDF document text
    • http://studiotecniconuti.it/userfiles/files/pigipijuzabaponin.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/nitavuli.pdfIn PDF document text
    • https://www.drukwerkmax.nl/public/admin/assets/global/plugins/kcfinder/upload/files/nonoluxogejezid.pdfIn PDF document text
    • http://hotelclinton.it/userfiles/files/wimidomekuwexezabozo.pdfIn PDF document text
    • https://ckmusicdesign.nl/userfiles/file/95713430026.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/18149579529.pdfIn PDF document text
    • https://dudikom.pl/userfiles/file/wawoboberulelipitowi.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_off0008131c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8131C 11056 bytes
SHA-256: 7a656466dd8893cc285a877583ec06a506e2e343d95e529fd84bfa62dc98ab60
font_01_sfnt_off00082ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CA7 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00084346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84346 19736 bytes
SHA-256: be9cb20f101ca1d61c678ffa12896997bf6c760676e5d23d7c49b468509f0ca6