Malicious PDF — malware analysis report

Static analysis result for SHA-256 875a59c0c9e1902e…

MALICIOUS

PDF

309.8 KB Created: 2022-03-18 13:13:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 3b0921ecbe0f0c48a8299f15796e2d0e SHA-1: b5d4ec2be113ef7f21c410d9b6805bff221190e3 SHA-256: 875a59c0c9e1902e85b8c16a38929c53ba1173222c99b8e5586d01b657400322
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7334

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://joyear.com/ckfinder/userfiles/files/mefuxuwirumuzudar.pdf In PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16223d1995e250---12871109295.pdfIn PDF document text
    • https://fluffy-chins.sunnylion.com/images/file/doxudadakefapuwile.pdfIn PDF document text
    • http://an-ocn.ru/ckfinder/userfiles/files/31938497177.pdfIn PDF document text
    • http://hipscycle.simplywebeditor.com/site-uploads/94457150015.pdfIn PDF document text
    • http://schokoladenfontaene.de/idata/50732514247.pdfIn PDF document text
    • https://leciv.fr/uploads/FCK_files/file/54794240221.pdfIn PDF document text
    • https://www.osazovanidps.eu/admin/kcfinder/upload/files/49445282365.pdfIn PDF document text
    • http://sung1.com/upload/files/lusesekidudogal.pdfIn PDF document text
    • http://euro-service.org/kcfinder/upload/images/nokekakesozokebazozon.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16215ae6314b08---pisujovepawukexenujefiwut.pdfIn PDF document text
    • http://csc020.com/userfiles/file/20220302081010_gvlkgz.pdfIn PDF document text
    • http://veszpremkosar.hu/_user/file/ropepozemofikazexamabosif.pdfIn PDF document text
    • http://walosports.cl/userfiles/file/pirixiritevawuso.pdfIn PDF document text
    • https://catequesisnavarra.org/guiarte_userfiles/files/wutufamidodorep.pdfIn PDF document text
    • https://scaligeraarredamenti.com/admin/data/files/files/3321048060.pdfIn PDF document text
    • http://jurabos.nl/include/editor/file/nutakixewe.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1621da5b7a08ec---jupijijebagimemezine.pdfIn PDF document text
    • http://fvv-hohenfelde.de/sites/default/files/files/76308688013.pdfIn PDF document text
    • http://www.politico.cnm.org.br/ckeditor_custom/kcfinder/upload/files/jeziponulenojafesusagoxev.pdfIn PDF document text
    • https://kaptenhoki.com/contents/files/86360007252.pdfIn PDF document text
    • http://mentoslaci.hu/admin/kcfinder/upload/files/sesepitodutib.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=media+kit+template+wordPDF link annotation
    • http://wmc21.com/ckupload/files/75187345679.pdfIn PDF document text
    • https://ceb.lk/assets/js/kcfinder/upload/files/limaje.pdfIn PDF document text
    • https://ceb.lk/assets/js/kcfinder/upload/files/46811987867.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_off00046ba6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00046ba6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00046ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46BA6 10452 bytes
SHA-256: d4a55fca1afcdf891afb160c98cc4b5606b35f625a0992343af2bc2de71291dd
font_01_sfnt_off00048362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48362 17668 bytes
SHA-256: 08c8363f5b56e6ca72bdc4648d08c52eccebbd6cd8485e8280b57c999477d868
font_02_sfnt_off0004b120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B120 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9