Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ce7b51cef76f78…

MALICIOUS

PDF

495.3 KB Created: 2022-02-21 12:21:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 94ee7e077e306434c547a6ee8056b55a SHA-1: 8d3a5a0a50e9eaded9a6f47ad4b002dc30a3444a SHA-256: 25ce7b51cef76f787f37c9ee02dfa397ecd91d66650b4e2c13c60f4adcf606a2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5411

Heuristics 5

  • 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.
  • 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/XSRYdR1H?utm_term=sa+hip+hop+albums+free PDF link annotation
    • https://skyzoan.com/cake/beta/userfiles/file/61405425085.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/wixosebibabuzik.pdfIn PDF document text
    • http://www.yankey.com.tw/demo/public/editor/ckfinder/upload/user_upload/files/pomagerusovibevefid.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/cc378f8659650711a0a839e77788ce3d/73219527289.pdfIn PDF document text
    • http://kazbani.ru/kcfinder/upload/files/vedekifajufazusoze.pdfIn PDF document text
    • http://medwin.kr/userData/board/file/11428497855.pdfIn PDF document text
    • http://pol2-simf.ru/userfiles/file/589226789.pdfIn PDF document text
    • http://www.groupementpecheduloir.com/ckfinder/userfiles/files/gazuvubizamavop.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e481bb0cc0f---81055314378.pdfIn PDF document text
    • http://csc0871.com/userfiles/file/20211021035752_6rjy7r.pdfIn PDF document text
    • http://stamforgtechnologies.com/uploads/supinazarotonudezaz.pdfIn PDF document text
    • https://www.q-jin.ne.jp/ckfinder/userfiles/files/95155425972.pdfIn PDF document text
    • http://nationalcoopadvisors.com/userfiles/files/48037671972.pdfIn PDF document text
    • https://hijaustabilo.com/contents//files/rijedaxoxefura.pdfIn PDF document text
    • https://oilbasaro.com/web/images/ckfinder/files/20220208093319.pdfIn PDF document text
    • http://www.samuitns.com/image/upload/File/vavupabagubewumexixef.pdfIn PDF document text
    • https://escritacontabilidade.net/fotos/news/file/xeputob.pdfIn PDF document text
    • https://barrier.exma.cl/ckfinder/userfiles/files/62014875313.pdfIn PDF document text
    • http://velapower.com/glwh/UploadFile/file/2021120100384573499.pdfIn PDF document text
    • http://akwarella.pl/user_uploads/file/guxewumupelaresifamap.pdfIn PDF document text
    • https://garmin10.ddbseven.cl/userfiles/file/pazonebidafuzipanat.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_off00074468.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00074468.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00074468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74468 21956 bytes
SHA-256: 9dea7daed260bbf32f4a9dd133b0412238ccf2a09174751a89f38d0554452258
font_01_sfnt_off00077ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EA8 10736 bytes
SHA-256: 8fb1128dc888ece9c2afd06839e2a776a04f7b7d2ce9323f55f0e1fe76fb0015
font_02_sfnt_off0007970e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7970E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9