Malicious PDF — malware analysis report

Static analysis result for SHA-256 191440ad447ad2b2…

MALICIOUS

PDF

343.2 KB Created: 2022-02-28 21:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 20407dafdf9637285cc6df450ffa1538 SHA-1: fc07dab65991be3b317c7c0db55aeb5ae389e868 SHA-256: 191440ad447ad2b2ca7242cf0e5b073adef18ebb94830a144071456731c7a937
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7933

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://lazav.co.za/XSRYdR1H?utm_term=affixes+and+root+words+pdf PDF link annotation
    • https://www.colegiumaniucarei.ro/ckfinder/userfiles/files/lerokopu.pdfIn PDF document text
    • http://glassick.com/userfiles/file/6658995033.pdfIn PDF document text
    • http://nofatrans-int.com/userfiles/file/78637623862.pdfIn PDF document text
    • http://nsmpublicschool.org/slbdavbatala/userfiles/file/vizavifabumedok.pdfIn PDF document text
    • http://ahjygjg.com/upload_fck/file/2022-2-18/20220218220920271718.pdfIn PDF document text
    • http://mikailang.com/userfiles/file/20220206034521_1365980906.pdfIn PDF document text
    • http://beibarys.com/app/webroot/js/kcfinder/upload/files/56270024750.pdfIn PDF document text
    • http://wetravels.com/kcfinder/upload/files/60141316086.pdfIn PDF document text
    • http://guide-eq.com/userfiles/file/20220219080157_7z3a8e.pdfIn PDF document text
    • https://bulendengin.com/upload/ckfinder/files/34184382671.pdfIn PDF document text
    • http://3sdent.com/upload/files/sagovuwulufawuwiluzekisuz.pdfIn PDF document text
    • http://s-privod.ru/userfiles/file/visedidof.pdfIn PDF document text
    • https://wittnebel.dk/file/xisemuramiratapexemunor.pdfIn PDF document text
    • https://kolkataangikar.org/ckfinder/userfiles/files/12328449506.pdfIn PDF document text
    • http://www.ppspr.org.br/ckeditor/kcfinder/upload/files/63842845713.pdfIn PDF document text
    • http://lahore3dstudio.com/cmsimages/file/pikafu.pdfIn PDF document text
    • https://hujanuang.com/contents/files/44572161505.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5fb991ee8a3aa2f56d54c4111b3ccab1/gopuwadesixokapaxedimuj.pdfIn PDF document text
    • https://tskrea.com/userfiles/file/7107277002.pdfIn PDF document text
    • http://zenithmetals.com/files/15345699448.pdfIn PDF document text
    • http://gcoekmr.org/cukashmir/User_Files/imagefile/99661518330.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_off0004ebf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBF1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005030c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5030C 19224 bytes
SHA-256: 61245ea0dca7418cbf35a47dc901e29c2ee0786d64a553a19d0050d7b49f2d1b
font_02_sfnt_off00053587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53587 10616 bytes
SHA-256: 59679b72b65d00aedbb1ebe75cd9483dec22e52ca5796acdae0b384d28ac69c9

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