Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cb96bcce31abbb…

MALICIOUS

PDF

386.4 KB Created: 2022-03-22 11:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: b8be33d6b3a99f628f654fd0381dfbcf SHA-1: 3b126da97491d486f602e1d1c2ee08f3b990e1e3 SHA-256: a9cb96bcce31abbb7a35f49e405a8a963b3a4198daf7d9c00db0255eb661e016
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9523

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://yubit.co.za/XSRYdR1H?utm_term=Goottilaiset+aurinkolasit+miehille PDF link annotation
    • http://chestheart.org/assets/ckeditor/kcfinder/upload/files/92313793190.pdfIn PDF document text
    • https://perfectionistpaintingnj.com/ckfinder/userfiles/files/23221959517.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/n1ti8nirt6usp4h5ml32tctsln/36223203431.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/xofopajetuf.pdfIn PDF document text
    • http://www.likoda.com.tw/upload/ckimg/files/9585195734.pdfIn PDF document text
    • http://sopkambing.com/contents/files/57505126041.pdfIn PDF document text
    • http://www.auberdiffusion.com/ckeditor/kcfinder/upload/files/nafememugemi.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/wesozuxexavikov.pdfIn PDF document text
    • http://xn--9d0bk1sn6gncq95flql.com/user_data/kcfinder/files/vidabukekinimet.pdfIn PDF document text
    • https://www.procotech.be/ckeditor/kcfinder/upload/files/34573844089.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/77d90436e0940f9bfcfd274ec6eb332c/pokexa.pdfIn PDF document text
    • https://huanghecables.com/d/files/47362396893.pdfIn PDF document text
    • http://piannocreativo.com/js/new/fckeditor/userfiles/file/gulisugid.pdfIn PDF document text
    • https://andana.us/files/files/wikolelobasejetunem.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/671d8be2e15262afca55616b1ddcb3a8/vilivaxisudimukiku.pdfIn PDF document text
    • http://sindikat777.ru/ckeditor/ckfinder/core/connector/php/uploads/files/kuredezan.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/sewumigowujuvime.pdfIn PDF document text
    • http://www.chestheart.org/assets/ckeditor/kcfinder/upload/files/susotafos.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/vokaxisalojeturilezikel.pdfIn PDF document text
    • https://domainedulacstellan.com/admin/kcfinder/upload/files/24079601565.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_off00059e0c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00059e0c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E0C 17272 bytes
SHA-256: d165d6d20c72f7b342c8db58df726e7bdc058836ffe72820b6018dbae2abab8e
font_01_sfnt_off0005ca89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA89 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005e1a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1A9 10604 bytes
SHA-256: 4a99d6fd5c7c857af07262980b329602b188465176b5bc90afc9906e3016fa1b