Malicious PDF — malware analysis report

Static analysis result for SHA-256 9412e0a61ae09718…

MALICIOUS

PDF

413.2 KB Created: 2022-02-05 05:08:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 21f4a37c8c71ad45767b64eacd883428 SHA-1: 8cebf33c0bb8d3c34a00a84b2e98ced50345a689 SHA-256: 9412e0a61ae09718894405fef04918e05423d248e517e76e6351e3aacf37cd5f
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high-severity heuristic firing for a PDF SEO UTM redirector link, indicating a phishing lure. The primary redirector URL, https://yubit.co.za/XSRYdR1H?utm_term=bridal+wave+english+subtitles, is used to direct the user to a malicious site. The ClamAV detection further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4953

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.
  • 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://yubit.co.za/XSRYdR1H?utm_term=bridal+wave+english+subtitles PDF link annotation
    • https://crfgo.org.br/painel/geral/sistema/php/kcfinder/upload/files/gopowowixo.pdfIn PDF document text
    • http://ikuma-car.com/js/upload/files/javet.pdfIn PDF document text
    • http://michalpavlicek.com/uploaded/file/wapulomi.pdfIn PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/zavukuxeku.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/60122805349.pdfIn PDF document text
    • https://bdblue.com/ckfinder/userfiles/files/bosagux.pdfIn PDF document text
    • http://alajwakh.com/uploaded_files/userfiles/files/rugogudegibugagazojivuw.pdfIn PDF document text
    • http://rent2day.ca/ci2/userfiles/files/95158700348.pdfIn PDF document text
    • http://naitikfashions.com/ckfinder/userfiles/files/mezuvoxajubejagire.pdfIn PDF document text
    • https://interconformity.ro/images/file/19270314923.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/69310798204.pdfIn PDF document text
    • http://to-kajihan.net/js/upload/files/biremipejifividu.pdfIn PDF document text
    • http://vietnam-intraco.com/webroot/img/files/fumejumituxekokizukala.pdfIn PDF document text
    • http://studioarchterreni.it/userfiles/files/xasamakemokavatiwekoro.pdfIn PDF document text
    • http://hotechike.com/files/files/15713862497.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005e5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5DC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005fcf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCF2 2576 bytes
SHA-256: 701a3ffe98f29644ff0bd0ab59dfbe8b81f513fadeb53714856e4da143428444
font_02_sfnt_off00060801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60801 16340 bytes
SHA-256: ea1d46053f64fad4931958dc4bf90ffb9206e94827ddc2f670cb24b1bf7a415a
font_03_sfnt_off00061e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E35 17768 bytes
SHA-256: 2695de1ba9df515e611edb0de08b4d68907788ad8664e5ea6efe68eafc1468f6
font_04_sfnt_off00064cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CC5 10852 bytes
SHA-256: 16f503fcfbe7dc33da59a0fd5420ae4eb742e952276d125295573127761d275f

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