Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b4ceba50323efc…

MALICIOUS

PDF

478.1 KB Created: 2022-02-05 23:46:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: f6cd6b4f6b2c4ca363fefdbef4c0529e SHA-1: 8fd5f3f1d5a366606f7505e85fbfb7b7a98afa10 SHA-256: 72b4ceba50323efcf230516d01c3ddd0a92251900b59b36fe60006b5bc739181
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8170

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://yubit.co.za/XSRYdR1H?utm_term=determiners+worksheets+with+answers+for+class+8 PDF link annotation
    • http://malagi.pl/user-files/fck/file/ximajegesozilej.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/bagunolukikezubez.pdfIn PDF document text
    • http://richardchong.com/userfiles/files/4985658653.pdfIn PDF document text
    • https://hiddencliff.kr/FileData/ckfinder/files/20211214_651A7822A22AEF08.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/filivuz.pdfIn PDF document text
    • http://metaglas.kr/userData/board/file/52014983390.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/vajetibewekigorok.pdfIn PDF document text
    • http://maxbrio.kr/files/files/vewab.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/791aad315252d6ad4eecce9b7176c418/binewugo.pdfIn PDF document text
    • https://ms01bet.net/contents/files/43152267068.pdfIn PDF document text
    • https://noventa.cz/media/files/file/28332931049.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/17090523224.pdfIn PDF document text
    • http://dbrostechnology.com.np/dbros/public/ckeditor/kcfinder/upload/files/11643680886.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161e49bd8f33e7---juxobovevelaliso.pdfIn PDF document text
    • http://namuvaldymas.lt/userfiles/file/sebopijizo.pdfIn PDF document text
    • http://gcsiva.com/files/userfiles/file/19169862864.pdfIn PDF document text
    • https://www.aaptuk.org/ckfinder/userfiles/files/40903639716.pdfIn PDF document text
    • https://dmshospital.com/mm_engg/files/wuremutesejajibopinudid.pdfIn PDF document text
    • https://webrobogo.hu/kepek/73552794340.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_off00070cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CDC 10988 bytes
SHA-256: 12e179e2332eb2848343eb95232fe9dffd1ae7cf6689fceb2cd65cf892ca136c
font_01_sfnt_off00072645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72645 17092 bytes
SHA-256: 4927c3a812dd7a602d5f84ece33ba5d480ebabf8e969db374f37c5196ae1f2a6
font_02_sfnt_off00075281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75281 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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