Malicious PDF — malware analysis report

Static analysis result for SHA-256 4785590380ec6d59…

MALICIOUS

PDF

303.1 KB Created: 2021-12-25 04:35:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: eca41658027e9a1acb062aaa270c4d2a SHA-1: 6fdbf52650f8d6186d73423b0cd4fe4b06f83e04 SHA-256: 4785590380ec6d599364641babdcd050fc00a288c9a2213415aea35201825077
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7548

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://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/62362698932.pdf In PDF document text
    • https://ip-kamera-rendszer.nuttydog.hu/ckfinder/userfiles/files/21207617024.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/161467864bc8af---20091745064.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161a4e89ae88ee---95719594949.pdfIn PDF document text
    • https://colortest.biolifecosmetics.com/upload/file/zumanosogizofeguwatesa.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1615f9cfa945e9---rajubos.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/4c7582d33cf007aa78ce606995d8e165/laxet.pdfIn PDF document text
    • https://basundharamart.com/userfiles/file/59174242384.pdfIn PDF document text
    • http://zamgph.com/uploads/file/250911462583.pdfIn PDF document text
    • https://cartorioleandrofelix.com.br/kcfinder/upload/files/66967007964.pdfIn PDF document text
    • http://kingbikeonline.com/images/upload/File/44235706240.pdfIn PDF document text
    • http://hnc2.com/userfiles/file/9882132548.pdfIn PDF document text
    • https://korvioinfotech.com/ckfinder/userfiles/files/kozibebipes.pdfIn PDF document text
    • http://www.petercar0937494634.com/upload/img/files/degopimunukow.pdfIn PDF document text
    • http://studiobonvino.com/userfiles/files/jevixirimimi.pdfIn PDF document text
    • http://blow-w124.com/js/upload/files/gafekexolikuxikuwurosep.pdfIn PDF document text
    • http://jvcc.cn/ckfinder/userfiles/files/211105111928016601ovhcr.pdfIn PDF document text
    • http://lejuriste.ru/files/file/52784586336.pdfIn PDF document text
    • https://art-gallery.mn/uploads/files/89221323634.pdfIn PDF document text
    • https://gppacdatabase.net/userfiles/file/36372249867.pdfIn PDF document text
    • http://www.binghan.my/userfiles/file/42881791113.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/80794335552.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16173ffb21269c---49032407500.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/RC0zOYPQW8A/uplcv?utm_term=avs+video+editor+gratis+32+bitPDF link annotation
    • 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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44F38 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000465dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x465DC 10752 bytes
SHA-256: 3f44d82fe2811f22a6b7532893574d96f3060883ce2fab132589171df9327a43
font_02_sfnt_off00047ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47EA2 18064 bytes
SHA-256: 3456a8e8e242f8ad77376aafb7b552d673a03bb8140ac0171241434b21567d2b