Malicious PDF — malware analysis report

Static analysis result for SHA-256 624165ae405d39b6…

MALICIOUS

PDF

248.8 KB Created: 2022-03-17 23:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-28
MD5: 0a46ca577257adf49b6c3bbb837b7af0 SHA-1: eaf80c69d9d5625cf225d8a2b39c4d11b1297404 SHA-256: 624165ae405d39b67fc24af4c10552e50c8ed2e55060951f5624cf6e7426e0db
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7783

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=background+bubbles+images PDF link annotation
    • http://noahsmarinesurveyors.ca/userfiles/file/45487383324.pdfIn PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/13402661796.pdfIn PDF document text
    • http://balone.net/_upload/file///serofomupow.pdfIn PDF document text
    • https://xn----8sbkgjdl3aku5f.xn--07-6kc3bf4angc2g.xn--p1ai/files/files/wetatef.pdfIn PDF document text
    • http://ingenierie-mont-blanc.fr/kcfinder/upload/files/63905047071.pdfIn PDF document text
    • https://dvcard.dsverano.com/UserFiles/File/nubobaji.pdfIn PDF document text
    • https://onlineadda.net/ckfinder/userfiles/files/95737459823.pdfIn PDF document text
    • http://konyaozgunmobilya.com/userfiles/file/57929722307.pdfIn PDF document text
    • http://ilpiccantino.it/admin/data/img/uploads/files/fizemipixepovevate.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/vusidinivazubigosidige.pdfIn PDF document text
    • https://123natura.com/stockages/files/sevanogumebawul.pdfIn PDF document text
    • http://bizzarro.be/admin/kcfinder/upload/files/bibetejafopuduja.pdfIn PDF document text
    • http://media-production.net/admin/ckfinder/userfiles/files/vabotegubozawijibanomi.pdfIn PDF document text
    • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/zokasix.pdfIn PDF document text
    • https://hinodanang.com/uploads/image/files/73868362638.pdfIn PDF document text
    • http://www.dinapart.net/frontend/web/kcfinder/upload/files/rimowogitixaw.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620d98193b579---77972494710.pdfIn PDF document text
    • http://tcyy88.com/userfiles/file/2022030323084273499.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/161feffe31f74e---gumezivobekaniduvim.pdfIn PDF document text
    • https://netiko.fr/img/Data/file/56080727982.pdfIn PDF document text
    • https://nppmaudaha.in/ckfinder/userfiles/files/lokaxebuwiwizosekivoj.pdfIn PDF document text
    • https://greengenome.in/admin/userfiles/file/wixabuta.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/161ff29965847b---62529791442.pdfIn PDF document text
    • http://kungfubp.hu/admin/assets/images/files/pifon.pdfIn PDF document text
    • https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/jogur.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20220225101811.pdfIn PDF document text
    • http://banderlogclub.ru/kcfinder/upload/files/89419410671.pdfIn PDF document text
    • http://gruaszarate.com/ckfinder/userfiles/files/54877527697.pdfIn PDF document text
    • https://milkywayads.com/webroot/img/files/melavon.pdfIn PDF document text
    • https://rsun.pro/admin/ckfinder/userfiles/files/43956570399.pdfIn PDF document text
    • http://upservice.expert/admin/ckfinder/userfiles/files/26587183196.pdfIn PDF document text
    • http://szmchem.com/userfiles/file/nagoduvidodovovejezin.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_off00037a82.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00037a82.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37A82 16092 bytes
SHA-256: 368a11963f37f461ab9a9a3d23f2ea05c1dc32d94153ae503ccfb6a2587be3ce
font_01_sfnt_off0003a3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A3B5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003bad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BAD5 11000 bytes
SHA-256: c8d3b385c18ea84ce805f7dec1c7ed70aff6ee18d68d44a76daebabec36a3104