Malicious PDF — malware analysis report

Static analysis result for SHA-256 19104ddf237c17cb…

MALICIOUS

PDF

293.0 KB Created: 2022-02-06 19:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 4ced01d68cfe4be914f51668a393c68c SHA-1: 66aa9efec64cc88ebb52b33fcd7934c668be245b SHA-256: 19104ddf237c17cb0ab6a9d7a42ffd99754152a03230ae1fcccfe0ac739c4284
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7003

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://sunuf.co.za/XSRYdR1H?utm_term=fake+call+app++uptodown PDF link annotation
    • https://lorus.rs/files/13635031721.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b1ce81cc37---10298029420.pdfIn PDF document text
    • http://nincity.de/inline/file/44410256419.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/26117107125.pdfIn PDF document text
    • http://www.malagatour.es/ckfinder/userfiles/files/97976092495.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/wujixorilawikivixupupa.pdfIn PDF document text
    • http://faceconnects.com/ci/userfiles/files/52108302542.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/32455329769.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614b82510b347---bedibudid.pdfIn PDF document text
    • https://bigsao.com/kcfinder/upload/files/26854711362.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615886a809139---1682486797.pdfIn PDF document text
    • https://fzclicks.com/demo/files/editor/file/88995885428.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/55519624857.pdfIn PDF document text
    • http://kujainspectors.com/candyticket/uploads/page_images/files/2299013067.pdfIn PDF document text
    • http://garantc.ru/userfiles/file/11318862730.pdfIn PDF document text
    • http://rbtyutj01.com/userfiles/files/38051619163.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/betepozumimukunijom.pdfIn PDF document text
    • http://tiga.co.th/ckfinder/userfiles/files/zekegidamekezikevamomiz.pdfIn PDF document text
    • http://izhar-energy.com/userfiles/file/dedibirawozixiduzom.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/parevalezosemog.pdfIn PDF document text
    • https://alirezamirmohammadi.com/images/upload/files/disovosemibilesino.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/1ef2b459289d48d1506443320f429588/18873780368.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/t7rge19qajut50ce2jgfqp51ft/povaxogexigiwofu.pdfIn PDF document text
    • https://bagstyle.uz/images/file/72540894698.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_off0004228d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4228D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000439a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x439A8 20780 bytes
SHA-256: cc03a62e0cbae3d9769d420208388c3fc99829ecb8d2a3c569fd82bfa8c702d9
font_02_sfnt_off00046d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46D58 10400 bytes
SHA-256: 7f3818916d98fa32fca2ea8835047f2389addd7ae2f2b15d953f834dba928a72