Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7d8eb449242d71…

MALICIOUS

PDF

350.3 KB Created: 2022-02-06 07:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 85b8f91aed5aff009e0f411ae81e03d9 SHA-1: e311369b380067ee8e0aec79ad745e26a6cc49d1 SHA-256: cd7d8eb449242d71c8d42e3992f6ffe9218cbe7b60b9e3783dbf60f90183c741
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9667

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://norin.co.za/XSRYdR1H?utm_term=full+hd+wallpaper++1080p+nature PDF link annotation
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff79a9884d5---62544954107.pdfIn PDF document text
    • http://terhautz.com/upload_files/files/63857512452.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/dufuvimib.pdfIn PDF document text
    • https://m-isc.com/userfiles/file/49774815748.pdfIn PDF document text
    • https://ccs-corporation.com/ckfinder/userfiles/files/tomilixotigonudezunutiz.pdfIn PDF document text
    • http://americasbestmanassas.com/uploads/files/42773778594.pdfIn PDF document text
    • http://mastera-mix.ru/ckfinder/userfiles/files/50029130773.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161a3650146d29---vifuzefodurexebodalenata.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/161928bedc7723---kakax.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/42a248f3e480177d94ff9940084cd243/17800685489.pdfIn PDF document text
    • http://zae.me/datafiles/file/rukamatup.pdfIn PDF document text
    • http://mesterteto.hu/userfiles/file/xitix.pdfIn PDF document text
    • https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/48429168120.pdfIn PDF document text
    • https://www.gico.ge/ckfinder/userfiles/files/kudezekonaremiwakogupez.pdfIn PDF document text
    • http://chinalabware.es/d/files/86520925917.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ff9eadb79d1---mopaborat.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_off0005106f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5106F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005278a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5278A 16800 bytes
SHA-256: 86b31670caad5e96e911d33e53ebfa90097cb95eb3b7ec4ab6df4987316ba2ce
font_02_sfnt_off000552df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x552DF 10652 bytes
SHA-256: 07a36c6c51df4b64dee589a25bc057afc744e382da9ac8c1abd888d568d66649

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