Malicious PDF — malware analysis report

Static analysis result for SHA-256 4def46740c963361…

MALICIOUS

PDF

372.1 KB Created: 2022-03-01 14:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 091849fe4ad19aea350b06191a179492 SHA-1: 18437539a09cbe1cb942e04b929e9167427a94c6 SHA-256: 4def46740c963361c0d9ea926cf16e7c5a266e0bd26fb9a2c1bc95c1b8c07257
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6982

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 http://studiocastigli.eu/userfiles/files/76273914964.pdf In PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/ravowewewu.pdfIn PDF document text
    • http://xn--54-dlcdkamdj4btild5b.xn--p1ai/ckfinder/userfiles/files/sudatubof.pdfIn PDF document text
    • https://christavedelaar.nl/bestanden/files/15627016661.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/kopeduvotaxomerifetivu.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/kovufodubazik.pdfIn PDF document text
    • http://menlopark.com/wysiwygfiles/file/zitosatigixosuxenidaso.pdfIn PDF document text
    • http://studiolorenzino.eu/userfiles/files/zuwovejuli.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/xesilemisodubuv.pdfIn PDF document text
    • https://kecweleri.kendalkab.go.id/kcfinder/upload/files/62134809708.pdfIn PDF document text
    • https://wiltech-hk.com/editor_upload/file/46066032056.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16206cbacb88b1---luxenusakepewor.pdfIn PDF document text
    • https://olafree.gr/admin/images/72490859215.pdfIn PDF document text
    • http://coolscape.info/images/files/32577837784.pdfIn PDF document text
    • http://garmaclima.com/uploads/ckfinder/files/46966759319.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/bujenarobanelobubevasaf.pdfIn PDF document text
    • https://www.mkoe.hu/public/plugins/ckeditor/kcfinder/upload/files/15723465587.pdfIn PDF document text
    • http://builderall.info/userfiles/file/fopurekagon.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fd154334e39---38347419746.pdfIn PDF document text
    • https://mapro-spb.ru/img/file/jenulezunikukudalixupak.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/78131186219.pdfIn PDF document text
    • http://chronoflex-dz.com/app/webroot/assets/js/kcfinder/upload/files/37767280324.pdfIn PDF document text
    • https://jaukiaplinka.lt/ckfinder/userfiles/files/debatapedal.pdfIn PDF document text
    • https://wmu24.ru/media/file/85693849351.pdfIn PDF document text
    • https://divanich96.ru/admin/ckfinder/userfiles/files/tigupeja.pdfIn PDF document text
    • http://masterref.ru/editorfiles/file/suwerogugorinigopagisupux.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/161f94236a94d7---46379388258.pdfIn PDF document text
    • https://www.pkkmaluku.org/berkas/plugin/ckeditor/kcfinder/upload/files/83047517500.pdfIn PDF document text
    • http://cwesp.biz/upload/file/tatibidadafe.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=hibiscus+flower+information+in+marathi+wikipediaPDF link annotation
    • http://przybyszewski.org/image/file/senujizeledogaxawabelujax.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_off00054c64.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00054c64.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C64 25484 bytes
SHA-256: 38f0c1cd0a0b41fec91bcea2ff4b58241fde761fce209f736bab8f4463b11b47
font_01_sfnt_off00058e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E24 11296 bytes
SHA-256: 7ad478c9512f53d787cdfcca616c905a262fe82a43a53677a1fd9f8570e81f73
font_02_sfnt_off0005a849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A849 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9