Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af3236ce540c647…

MALICIOUS

PDF

555.1 KB Created: 2022-02-06 19:51:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a2359f91ec8f75a242be5d7dcf12ff99 SHA-1: c293209eec979fd2ab454e3efe6b17eaa55f9540 SHA-256: 4af3236ce540c6478ecac115c5dc57bcf0ce4ab3c222ff0ef9b219d8ac652923
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3798

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=amaze+file+manager+free PDF link annotation
    • http://sanarina.de/ckfinder/userfiles/files/91419155325.pdfIn PDF document text
    • http://rediscover.today/databank/files/52636342006.pdfIn PDF document text
    • http://ihanzao.com/userfiles/file/20211101073032_1562064.pdfIn PDF document text
    • http://recentitsolutions.com/userfiles/file/13175591026.pdfIn PDF document text
    • http://paroissedementon.fr/upload/files/7319567009.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161472ec5ea3c2---21783907043.pdfIn PDF document text
    • http://chulatutoracademy.com/chulatutor/ckfinder/userfiles/files/xosolodegosuvol.pdfIn PDF document text
    • https://standsimulator.com/ckfinder/userfiles/files/32682568546.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/47722322939.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d3d083b754b---bexamitaka.pdfIn PDF document text
    • https://hantverkarenisandby.se/UserFiles/files/jafisune.pdfIn PDF document text
    • https://nistd.in/userfiles/file/26322332802.pdfIn PDF document text
    • http://toonesk.com/upload/vowukotinawobupote.pdfIn PDF document text
    • https://www.journalstudiesanthropology.ro/adm/jsq/kcfinder/upload/files/mekenukezojewure.pdfIn PDF document text
    • http://paulsaperstein.com/userfiles/files/defupuganuboji.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/39938333087.pdfIn PDF document text
    • http://danies.ru/ckfinder/userfiles/files/7217068691.pdfIn PDF document text
    • http://sevinctekstil.com/resimler/files/85469667241.pdfIn PDF document text
    • http://ekonopuntos.com/campannas/file/buvunajirasigom.pdfIn PDF document text
    • https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/fuzefususejezinil.pdfIn PDF document text
    • https://yingzhaoliuart.com/upload/file/13321192216.pdfIn PDF document text
    • https://thefashion.asia/admin/kcfinder/upload/files/xuwosemajulinuwawefag.pdfIn PDF document text
    • https://vanchuyensahara.com/site/files/11531277915.pdfIn PDF document text
    • http://climacom.eu/userfiles/files/72197692813.pdfIn PDF document text
    • https://kitapkapla.com/upload/ckfinder/files/95570154829.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/ef15f8f5bb470bb0b06f7a4e1d04863b/85675490102.pdfIn PDF document text
    • https://dichocungtoi.com/userfiles/file/pigedexutakotiwivuvozenu.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_off000842a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842A4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000859bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859BF 16528 bytes
SHA-256: b61493aa60246cf89d8c23e187932f543dc64eae59ad049ce012d42a369769f5
font_02_sfnt_off000884cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884CB 10212 bytes
SHA-256: b73e3dd6d9c61b6a0f35e598c67acf67948f1ff87effdd6b5fc9014ea76d20db