Malicious PDF — malware analysis report

Static analysis result for SHA-256 af241bf063da2205…

MALICIOUS

PDF

316.8 KB Created: 2022-01-21 16:55:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 8e9e851619a8b3821789307ed08a9c9f SHA-1: 669d6ff3e4a41af89b33f26b83bf9863a733f46e SHA-256: af241bf063da2205bf607396a3352076a8b9d9d6fa88bae2aac34fc9f6ee7a30
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8991

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://catamma.ru/uplcv?utm_term=obusforme+back+massager+review PDF link annotation
    • http://nhasachconggiao.com/luutru/files/23815365578.pdfIn PDF document text
    • http://kystar.net/filespath/files/20211029183149.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/33742786210.pdfIn PDF document text
    • https://st-stephens-church.com/upload/File/lazedajesazamojamevikame.pdfIn PDF document text
    • https://drosamahetta.com/userfiles/file/98970881622.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/38239302350.pdfIn PDF document text
    • https://masterjobintl.com/ckfinder/userfiles/files/51591688872.pdfIn PDF document text
    • http://sualpturizm.com/userfiles/file/jodadumanovaja.pdfIn PDF document text
    • http://binhchuachay.info/Images_upload/files/furerigenazagugumizel.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161ae16d6af290---58774691317.pdfIn PDF document text
    • http://cpils.com/userfiles/file/47295487936.pdfIn PDF document text
    • http://www.azurwelcomeservices.com/userfiles/file/11868312600.pdfIn PDF document text
    • https://skidnapping.com/uploadfiles/files/vurudepawofifawajupe.pdfIn PDF document text
    • https://cs168.tw/upfiles/editor/files/jufilexomeri.pdfIn PDF document text
    • http://gzbaosui.com/uploadfile/files/tamanidefumuze.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_off00048567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48567 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00049c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49C0B 10940 bytes
SHA-256: 5f49be2f13c5fd29bd02240cc9c3e14869109c7ed432e1c3c6aa362f5b97beac
font_02_sfnt_off0004b58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B58E 18184 bytes
SHA-256: 60c7b996831756d551693833f8544a27e6db1001ae80b673e69326dc27541747