Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f469d8776ef83a…

MALICIOUS

PDF

338.5 KB Created: 2022-03-14 03:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 4755059b010d8e66634840888a4ed788 SHA-1: b84f9acc85f99d96e2bfdc272b1774df4e1def8b SHA-256: a4f469d8776ef83ad5d293cee1e2fb40de40c82a51d89881e6a830e385f04634
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5962

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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://wirut.co.za/XSRYdR1H?utm_term=materi+bahaya+narkoba+pdf PDF link annotation
    • http://hammaddedunyasi.com/panel/kcfinder/upload/files/rutajadubi.pdfIn PDF document text
    • https://b2b-intelligence.it/uploads/file/nopejavusadokupanemodiku.pdfIn PDF document text
    • http://tootingtaxi.com/survey/userfiles/files/94355191764.pdfIn PDF document text
    • http://www.lalorraineperdue.com/documents/34738190122.pdfIn PDF document text
    • http://chemsdano.com/upload/files/57372449722.pdfIn PDF document text
    • https://hatarozatok.martonvasar.hu/ckeditor/kcfinder/upload/files/9620444951.pdfIn PDF document text
    • http://n3ss.ro/ckfinder/userfiles/files/jamowemifuz.pdfIn PDF document text
    • https://mail.conepe.org.br/public/ckeditor/kcfinder/upload/files/15754606055.pdfIn PDF document text
    • https://balticseaheritage.com/res/wysiwyg/file/13394191185.pdfIn PDF document text
    • http://arnoldbolingbroke.com/ckfinder/userfiles/files/ritaweneda.pdfIn PDF document text
    • http://alwaditrading.com/userfiles/files/14847190965.pdfIn PDF document text
    • http://czdashan.com/uploadfile/file/2022030822551773499.pdfIn PDF document text
    • https://thuaphatlaihoanghuy.com/uploads/files/63966022288.pdfIn PDF document text
    • http://nena-artspace.com/ckfinder/userfiles/files/kemelisikutovibe.pdfIn PDF document text
    • http://jn-zhsc.com/upload/20781677003.pdfIn PDF document text
    • https://fr.unecol.com/uploads/kcfinder/upload/files/gibotuderuforatag.pdfIn PDF document text
    • https://phr4u.com/files/negubovidowabozok.pdfIn PDF document text
    • http://vanharteyoga.nl/uploads/files/masimazafiloviwadoredok.pdfIn PDF document text
    • https://amc-lda.com/assets/kcfinder/upload/files/lubusuxazelawosunizu.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/ec91f2b35d7345251e20515408a3e7ac/tanokexefikorajis.pdfIn PDF document text
    • https://pinpointfeedtech.com/ckfinder/userfiles/files/koperefuf.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/jojezamibopomiselu.pdfIn PDF document text
    • http://aquamedia.cn/ckfinder/userfiles/files/tisinuwikezaleneg.pdfIn PDF document text
    • http://globalone-mould.com/gbw/fckfiles/20220218025220.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/86620538167.pdfIn PDF document text
    • https://lammensfilip.be/uploads/files/84034453816.pdfIn PDF document text
    • http://www.anpecv.es/gestor/ckeditor/kcfinder/images/files/56392360477.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16208238132d78---fimawes.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/mebovis.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f910a32b0d4---44947104057.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621116b127fd0---82159185885.pdfIn PDF document text
    • http://kolaykanal.com/userfiles/files/mavezejubulozuwimukaxegis.pdfIn PDF document text
    • https://vikta-fish.ru/upload/files/dobuwusedosilipebamuno.pdfIn PDF document text
    • https://scmsgroup.org/ckfinder/userfiles/files/49846413618.pdfIn PDF document text
    • https://jung.su/kcfinder/upload/files/xibosejen.pdfIn PDF document text
    • http://skia22.ru/pic/file/19631724460.pdfIn PDF document text
    • http://zhouzhuanx.com/v15/Upload/file/20222271545154308.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/213f6fb3f268ff7045a09aae56860fce/48892953684.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 extracted file (font_00_sfnt_off0004dcf0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004dcf0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004dcf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DCF0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004f40b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F40B 17460 bytes
SHA-256: a64272dbac1126752e76006a27818404347c81786b593b160b2a1df66f17c3ca
font_02_sfnt_off0005216c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5216C 10720 bytes
SHA-256: f33da9020d71f6a06fc7e3ff8538c4b22a5447405022fdb0276671f72851b91a