Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d539b772bd297e…

MALICIOUS

PDF

192.5 KB Created: 2022-03-13 22:36:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-27
MD5: c2142fd335d6e9b596ae1fd21b3a6298 SHA-1: 63f2375734a39a8c218a851f30a191369a7a56e9 SHA-256: c7d539b772bd297ed20a6f910414274d2174a435b6d44d2a7c387b58b24e1f4f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9045

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://fecuq.co.za/XSRYdR1H?utm_term=chrome+extension+video+er+plus PDF link annotation
    • http://torgoborud.org/images/file/gomibiviruwarit.pdfIn PDF document text
    • https://vas-muszakibolt.hu/userfiles/file/burusoboku.pdfIn PDF document text
    • http://messen.kellerdesign.de/userfiles/file/39909411819.pdfIn PDF document text
    • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/41255162136.pdfIn PDF document text
    • https://www.tailormadeholidayspt.com/kcfinder/upload/files/misat.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/jobiraxogakitawipibimulu.pdfIn PDF document text
    • http://apsencollege.org/test/fckeditor/file/wonorunisef.pdfIn PDF document text
    • https://xn--80aab4aif1bzi.xn--07-6kc3bf4angc2g.xn--p1ai/files/files/raxujataw.pdfIn PDF document text
    • http://merten-antik.su/kcfinder/upload/files/78443595125.pdfIn PDF document text
    • http://alanurturizm.com/rsm/files/kolukal.pdfIn PDF document text
    • https://fme.ba/kcfinder/files/6045540971.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620c6d7e42e8d---fujodaruk.pdfIn PDF document text
    • http://merten-antik.su/kcfinder/upload/files/94866004419.pdfIn PDF document text
    • https://xn----8sbkgjdl3aku5f.xn--07-6kc3bf4angc2g.xn--p1ai/files/files/15020108030.pdfIn PDF document text
    • http://comercialardevolana.net/admin/kcfinder/upload/files/jetogebugeru.pdfIn PDF document text
    • http://nhagiatxanh.com/public/default/ckeditor/files/vofavo.pdfIn PDF document text
    • http://joyear.com/ckfinder/userfiles/files/lalod.pdfIn PDF document text
    • http://preprod-proximeo.com/ckfinder/userfiles/files/numuw.pdfIn PDF document text
    • https://festivaldelmaridaje.com/sgi_userfiles/userfiles/files/naluvatunoputumikumenukuk.pdfIn PDF document text
    • http://raczcsalad.hu/files/56542696124.pdfIn PDF document text
    • http://techscreening.com/userfiles/files/webetopunibiwerib.pdfIn PDF document text
    • https://www.synergyom.com/kcfinder/upload/files/70838051553.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/dexisofuxadowekovudaj.pdfIn PDF document text
    • http://flussobjekte.at/kcfinder/upload/files/zevokavagi.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_off00028a51.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00028a51.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28A51 18048 bytes
SHA-256: 0939aea87d5d92068cc153273f37288142733e8b26ae9dc3001aa4dd24d107e5
font_01_sfnt_off0002b91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B91E 1860 bytes
SHA-256: 562d39cc93351683f3420870a5578826c1285db13c691c08f99be18f4980e560
font_02_sfnt_off0002c1d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1D5 10796 bytes
SHA-256: e24a5d5e4cd8aae0274758b0bf8020845a50085216ef801fc82d7dd0d537a04e
font_03_sfnt_off0002da91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA91 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9