Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f659a635292c59…

MALICIOUS

PDF

328.5 KB Created: 2022-03-16 08:35:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 050df48550f225e97a9f03f94464ee90 SHA-1: 3584202832f93d3c005e95f4a6296e3ddedf86cb SHA-256: a4f659a635292c59e247377cad0752a0d32a8288480ba1b641ae3fd7f95a4b1e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6543

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://mifuj.co.za/XSRYdR1H?utm_term=paper+bag+puppet+templates+halloween PDF link annotation
    • http://smartbazar.online/app/webroot/upload/files/2390528557.pdfIn PDF document text
    • http://shippingengineering.com/files/ckeditorothers/88203424621.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/matiforepuwe.pdfIn PDF document text
    • http://vce34.ru/attachments/file/12217984836.pdfIn PDF document text
    • http://sangtaoad.com/uploads/userfiles/file/1081035305.pdfIn PDF document text
    • http://simonova-zahrada.cz/ckeditor/kcfinder/upload/files/kananizofalejafigebejek.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fa3e7e8e8ab---15915344495.pdfIn PDF document text
    • http://cartopack.be/Images/file/bibanawositu.pdfIn PDF document text
    • http://biometria.pl/photos_fck/file/welibupumuxirig.pdfIn PDF document text
    • http://parbatsamajjapan.com/img/files/files/62226064013.pdfIn PDF document text
    • http://emotionpicturesfestival.gr/userfiles/file/rapidosesewub.pdfIn PDF document text
    • https://www.peace4r.com/assets/admin_panel/js/kcfinder/upload/files/42104028883.pdfIn PDF document text
    • http://folhacer.com/cliente/conteudos/files/pujasevanuwa.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1622fa30762546---78712117550.pdfIn PDF document text
    • http://z-him.ru/userfiles/file/92634969206.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622c314b1b80a---xusurotikopotokanejim.pdfIn PDF document text
    • https://robvandamfoto.nl/UserFiles/files/4534527460.pdfIn PDF document text
    • http://www.albertoabajolimousin.com/abm/Bibliotecas/kcfinder/upload/files/29716852580.pdfIn PDF document text
    • http://ckpb.cz/userfiles/files/11176969037.pdfIn PDF document text
    • https://www.amis-simserhof.fr/kcfinder/upload/files/22216248879.pdfIn PDF document text
    • http://anpo.vn/upload/files/simepe.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/162211cc552988---litad.pdfIn PDF document text
    • http://wellnesszeewolde.nl/site/data/ws/files/29540050659.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621cc6377469e---tudabilutemopij.pdfIn PDF document text
    • http://transchem-tech.com/Uploadfiles/files/60044563520.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/tufuruj.pdfIn PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/35348646361.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16209a8c0b9228---bafewofewi.pdfIn PDF document text
    • http://medcentervrn.ru/userfiles/files/28368196070.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_off0004b381.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004b381.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004b381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B381 10936 bytes
SHA-256: a6a11830e6fe6f248a8fdc71d380f6ffa987ef3d0e39cb7c798b96f919049ad8
font_01_sfnt_off0004cc8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC8D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004e3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E3A8 18100 bytes
SHA-256: 2125fe25b8cd5116f55bf9140804cfb8c5bd236258e15b5409e36b0b049fdf4f