Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca63703e5d70e72c…

MALICIOUS

PDF

396.7 KB Created: 2022-03-10 05:44:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-07
MD5: 35f1dc5b95dab2ba08e83ed3faafc5ab SHA-1: 0e91f2135c932f4d459d3ba64da74305e95fc9d2 SHA-256: ca63703e5d70e72c1192fee10032413a4b83f195e0aafc1a448de991b717c382
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6485

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://clingac.com/d/files/gogujurix.pdf In PDF document text
    • https://butchercurnow.com/img/shop/contents/39382617818.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/firirijuvare.pdfIn PDF document text
    • http://zhongguohuachun.com/d/files/41734097945.pdfIn PDF document text
    • http://www.bennex.co.th/assets/kcfinder/upload/files/83809949337.pdfIn PDF document text
    • http://jerry-cheese.com/kcfinder/upload/files/84216587444.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/6dc5b1356bd596445e8165daccd2a4fd/kasafapuka.pdfIn PDF document text
    • http://dothimau.vn/kcfinder/upload/files/84145321075.pdfIn PDF document text
    • http://integrotech.com/zdjecia/file/57044264263.pdfIn PDF document text
    • http://headrepublic.pl/images/files/godopi.pdfIn PDF document text
    • http://k-sta.kr/FileData/ckfinder/files/20220209_6506E061851DB38F.pdfIn PDF document text
    • https://almudenafernandez.co/ckfinder/userfiles/Files/sogepuv.pdfIn PDF document text
    • http://chirineli.com/img/lib/file/66394983405.pdfIn PDF document text
    • http://www.firengo.com/userfiles/files/lisuribadedumotasapasumet.pdfIn PDF document text
    • https://www.nrsa.tj/nrsa_system/ckeditor/kcfinder/upload/files/22488988095.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16225019482137---10265046100.pdfIn PDF document text
    • https://jcmimoveis.com/userfiles/file/17486499869.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/f667a34823dffd2f13dbe5baa67fbe21/68413293711.pdfIn PDF document text
    • http://kabinet.puzat.ru/marafon/uploads/files/38098108674.pdfIn PDF document text
    • http://amis-simserhof.fr/kcfinder/upload/files/molivomudisowid.pdfIn PDF document text
    • https://apgicl.com/public/files/assets/ckeditor/kcfinder/upload/files/mosigufoxu.pdfIn PDF document text
    • http://daivupaint.com/img-chamthi/files/51277197982.pdfIn PDF document text
    • https://lecinema.letheatre-narbonne.com/UserFiles/File/69035888318.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16228beb83333c---tivukiworu.pdfIn PDF document text
    • http://phuctuong.vn/images/files/86401522707.pdfIn PDF document text
    • http://valleytechltd.com/assets/ckeditor/kcfinder/upload/files/19928188614.pdfIn PDF document text
    • https://euroquimicadistribucion.com/zabaleta/data/imagenes_contenidos/file/rajumogefesajefinagavuxad.pdfIn PDF document text
    • https://www.madenisg.org.tr/kcfinder/upload/files/kiputizakibazabodezi.pdfIn PDF document text
    • http://seteo-dechets.com/images/file/minenu.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/81688102411.pdfIn PDF document text
    • http://droneducational.com/admin/userfiles/file/fibemumaxitadikewu.pdfIn PDF document text
    • https://trystsalonri.com/images/file/27541328241.pdfIn PDF document text
    • http://afi-dwls.de/upload/files/76250235395.pdfIn PDF document text
    • http://konditsionery-odincovo.ru/upload_picture/file/kunegudamugeb.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/tesiresuvaxejari.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16200d5c39dcf6---pekuladitivolejolunuloje.pdfIn PDF document text
    • http://securite.paqt.fr/images/file/59873064941.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/vazosafajagejotukelonevu.pdfIn PDF document text
    • https://tevav.co.za/XSRYdR1H?utm_term=bu+jhansi+phd+admission+form+2018PDF link annotation
    • https://montferri.com/admin/js/plugins/kcfinder/upload/files/tufoxenajozewetola.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_off0005bfd0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005bfd0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005bfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFD0 11272 bytes
SHA-256: 834601c1079fc2b4ae4cd4ede9912fe8adfad977bfb4ebe002db669f81e473e5
font_01_sfnt_off0005da0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA0D 18376 bytes
SHA-256: 9c6aa2dc868fe075209e62c21168c5195f5d79bd7aab45200c86d623e1851ba1
font_02_sfnt_off00060a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A5B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9