Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b95243f0038a80…

MALICIOUS

PDF

349.0 KB Created: 2022-03-03 20:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: be70f1ed55ebdc019c1cb917c0522ac8 SHA-1: abdea6f8bead3ddb4ddc76d7cab02ca2b67c22b9 SHA-256: a8b95243f0038a8003f38b76b823f56c3d6428d32ff533f9b7edd9e57ee5605a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8728

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://sts-cct.com/app/webroot/userfiles/files/17629535239.pdf In PDF document text
    • http://noithatdangcap.vn/app/webroot/uploads/files/95544028046.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/d4sh365act1i6vnmpf2c3jm33k/40059262308.pdfIn PDF document text
    • http://computerdoki.hu/user/file/jidobiwuzofipofunatot.pdfIn PDF document text
    • https://greassi.com/editor_upload/file/nojexujo.pdfIn PDF document text
    • https://zifu-tech.com/app/webroot/userfiles/files/56224970834.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/787e1bf1ad29b95b4df5a5f099a86f97/wefulesidi.pdfIn PDF document text
    • http://nieruchomosci-swidnica.pl/userfiles/file/50388839248.pdfIn PDF document text
    • https://peoplehelppeople.net/uploads/File/mezufapilubovusapi.pdfIn PDF document text
    • https://cihangirhotel.com/upload/ckfinder/files/97717427954.pdfIn PDF document text
    • https://marugame.hk/editor_upload/file/lenoxarukemunodawob.pdfIn PDF document text
    • http://women-for-marriage.com/ckfinder/userfiles/files/53856736297.pdfIn PDF document text
    • http://watch62.ru/files/files/zizarovurabubukobezavalun.pdfIn PDF document text
    • http://max-metal.pl/gfx/file/zapodetowopazitofukodena.pdfIn PDF document text
    • http://sccsfz.org/upload/2022-02/35260995856.pdfIn PDF document text
    • http://bcma.com.bd/backend/web/kcfinder/upload/files/bimidikukuzudekijazo.pdfIn PDF document text
    • https://kaztelcom.kz/ckfinder/userfiles/files/69853221834.pdfIn PDF document text
    • https://ice-group.pl/userfiles/file/40652166272.pdfIn PDF document text
    • https://fecuq.co.za/XSRYdR1H?utm_term=acknowledgment+of+paternity+inquiry+request+formPDF 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.netIn extracted file (font_00_sfnt_off000504ac.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000504ac.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000504ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x504AC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00051bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51BCC 11480 bytes
SHA-256: a8b9d9c25a2d1a3d5f4a5074cc4173b65cb0c8a51a4e2962a9dc808da09dcc7b
font_02_sfnt_off00053685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53685 17928 bytes
SHA-256: d32128e3ec7e53fa8e424902b7297d52782442c9c566be0aa0b6deb5d18ed2ec