Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f4c9fdccc159bc…

MALICIOUS

PDF

80.8 KB Created: 2022-05-04 05:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: a31369b8b278d646d387ff0182367f2b SHA-1: d219f275898c70b56da7a7d0bf587a359c3575a8 SHA-256: a4f4c9fdccc159bcb99e3648738cbd51faff7e740712697e35f037d5f1b8f08a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://cafij.co.za/YmrXLWy8?keyword=adventist%20hymnal%20chords%20pdf%20online%20converter%20mp3%20free PDF link annotation
    • https://duxotamu.weebly.com/uploads/1/4/1/3/141399880/874113.pdfIn PDF document text
    • https://gafujewat.weebly.com/uploads/1/3/4/6/134687801/aacf9b7c96.pdfIn PDF document text
    • http://cetis156.neutronds.com/assets/js/ckfinder/userfiles/files/71378733499.pdfIn PDF document text
    • https://gopejosakosi.weebly.com/uploads/1/3/4/8/134876247/woludavusefivefe.pdfIn PDF document text
    • https://thietkewebbacninh.com/webroot/img/files/bojuverugajuwede.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16222841779e5b---gogawekome.pdfIn PDF document text
    • https://alertsecurity.in/ckfinder/userfiles/files/57955600478.pdfIn PDF document text
    • https://liwimopak.weebly.com/uploads/1/4/1/3/141346096/koteritis_woxoteg.pdfIn PDF document text
    • https://www.reptrics.com/kcfinder/upload/files/43916493839.pdfIn PDF document text
    • http://parmalab.it/userfiles/files/12365623030.pdfIn PDF document text
    • https://zenoahshop-yokohama.com/upload/files/fuwekaku.pdfIn PDF document text
    • http://psn-monolit.ru/img_file/files/30896706058.pdfIn PDF document text
    • http://mebelhotel.ru/images/news/file/76332173837.pdfIn PDF document text
    • https://ganganagardentist.com/userfiles/file/72849969007.pdfIn PDF document text
    • http://www.workbythai.com/admin/assets/images/jifib.pdfIn PDF document text
    • http://uijaebooks.com/uploadfile/board_data/202204/file/1648856641.pdfIn PDF document text
    • http://wieswioska.pl/userfiles/file/xizoxetasebadabisutonu.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/162612862161e3---bedupewisufupenetivap.pdfIn PDF document text
    • http://cttinteriery.cz/files/upload/files/82397654405.pdfIn PDF document text
    • https://www.governancaparaobrasil.com.br/kcfinder/upload/files/xotawukalo.pdfIn PDF document text
    • https://takipbizde.com/calisma2/files/uploads/59670405496.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 extracted file (font_00_sfnt_off0000d44e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d44e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44E 11216 bytes
SHA-256: f8b895d9e2752f55c6963fd85f93620c709fc712056b307daa98675403b863e3
font_01_sfnt_off0000ee77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10689 17888 bytes
SHA-256: c7b69e810cc61abdfc4ae87956422cb3f8200b66ea91922dab44a051ebc3d60b