Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9990ef4f285f46a…

MALICIOUS

PDF

426.8 KB Created: 2022-02-18 02:23:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: cfc377b23a5a676d0ddf5efa5154e029 SHA-1: 9c144bc1af8897d82df3e4cd1f2f8d743520ba1c SHA-256: f9990ef4f285f46a5366bdc9575d769f2b20db4f0d64979ae479518996ce2a9d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5599

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://colod.co.za/XSRYdR1H?utm_term=go+to+sleep+my+baby+song PDF link annotation
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1619eb62b717ca---52001885426.pdfIn PDF document text
    • http://www.auberdiffusion.com/ckeditor/kcfinder/upload/files/tiluxe.pdfIn PDF document text
    • http://medigroupvn.com/upload/files/24037289811.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1617c899321a65---33829821609.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/jemowapov.pdfIn PDF document text
    • http://ambulatorioveterinariomariani.it/userfiles/files/kirojibatevamikozuguleb.pdfIn PDF document text
    • http://104408017.linker.tw/files/navalosadeb.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616b04b1b6b8e---95620178837.pdfIn PDF document text
    • http://muaah.ca/userfiles/files/sovewomovenetafonaketumex.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/98892241611.pdfIn PDF document text
    • https://mygoaltv.com/ipp/images/uploads/files/mexexasuwudotudipu.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/63026305728.pdfIn PDF document text
    • https://www.eclof.am/assets/ckeditor/kcfinder/upload/files/31186613240.pdfIn PDF document text
    • http://innovad-ltd.com/userfiles/file/rurod.pdfIn PDF document text
    • http://quangcongluc.com/upload/files/dajekisuwuvutizufamarud.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160eff4cce24cd---tevujilemo.pdfIn PDF document text
    • https://x-leather.com/radsportfiles/file/1889815659.pdfIn PDF document text
    • http://0vote.com/ckfinder/files/14360335463.pdfIn PDF document text
    • http://mixline.ru/img/lib/file/93899118801.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/36872768367.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/001b53644225eea22717e72d5416111d/zuboxipujububoxibuzu.pdfIn PDF document text
    • https://masukpt1.com/contents/files/93673553174.pdfIn PDF document text
    • https://www.centralleiloes.com.br/admincentral/ckeditor/kcfinder/upload/files/vasodurojuwiwupenidolutev.pdfIn PDF document text
    • http://peusch.lu/userfiles/files/xewuma.pdfIn PDF document text
    • http://radio-salsa.fr/php/rs/filesupload/file/79742501014.pdfIn PDF document text
    • http://azstorestudio.com/uploads/files/tixaw.pdfIn PDF document text
    • https://unibel.pl/pliki/upload/file/88275415602.pdfIn PDF document text
    • http://elmakoleji.k12.tr/public/kcfinder/upload/files/51764974246.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/lijuku.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_off00063e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E03 17840 bytes
SHA-256: 383f0e201aee689ebc5b2e493713cd9d8cbe53200c702f81139f5f8df3c984d4
font_01_sfnt_off00066cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CBB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000683db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683DB 10696 bytes
SHA-256: 3b5ee079fc7c6eedd4d198cedf262159b61f2717b756cd9739c5043579a63ade