Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4cabf85407f79c…

MALICIOUS

PDF

285.8 KB Created: 2022-03-23 05:46:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-03
MD5: 2991332c6456aece3c16b4472d0ad085 SHA-1: 65e2f97122af2b6c837bd5318442f96e71bddec1 SHA-256: de4cabf85407f79cacb9ad6810530288e9cc595c86a4e36b123929865ce2fb63
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a high-severity rule indicating an image lure linking to an SEO redirector for phishing. The ML classifier and ClamAV also identified it as malicious. The primary IOC is the redirector URL, which is likely used to funnel victims to a malicious site. No scripts were extracted, but the PDF structure and heuristics suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6715

Heuristics 5

  • 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.
  • 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://colod.co.za/XSRYdR1H?utm_term=c.+freeman+el PDF link annotation
    • https://alhurwallpaper.com/Files/files/12805080557.pdfIn PDF document text
    • https://used-machinetools.ro/app/webroot/files/userfiles/files/nebilekusuxazonixaf.pdfIn PDF document text
    • http://dnt-mayak.ru/content/File/jidaso.pdfIn PDF document text
    • https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/fevizexumarijapoxubut.pdfIn PDF document text
    • https://apexsafetyproducts.com/ckfinder/userfiles/files/jopamapuvuz.pdfIn PDF document text
    • https://affze.com/userfiles/file/31352219668.pdfIn PDF document text
    • https://entabe.com/upload/20220201/files/fokigewikigoxumoz.pdfIn PDF document text
    • https://www.dogruadimlar.com/admin/production/ckeditor/kcfinder/upload/files/52249709371.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/11589884484.pdfIn PDF document text
    • http://kccmaul.com/files/files/15846412392.pdfIn PDF document text
    • https://trungtamchonggia.vn/kcfinder/upload/files/jafof.pdfIn PDF document text
    • http://optimaglobal.net/ckupload/files/3203651075.pdfIn PDF document text
    • http://teewer.mn/ckfinder/userfiles/files/xogapabizekunifikan.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/75151611129.pdfIn PDF document text
    • https://helicopterleasingservices.com/userfiles/files/32921362174.pdfIn PDF document text
    • https://rainbowfurnitures.com/files/files/92489152558.pdfIn PDF document text
    • http://lovesenergy.com/file/dagozo.pdfIn PDF document text
    • http://usairsprings.com/userfiles/file/tikuru.pdfIn PDF document text
    • http://youil.org/userData/board/file/21105514111.pdfIn PDF document text
    • http://worldwidestationeryholdings.com/files/file/61047530693.pdfIn PDF document text
    • http://loxocongnghiep.com/MINH/user_files/file/damedesimi.pdfIn PDF document text
    • http://vecek.cz/upload/files/45450153490.pdfIn PDF document text
    • http://association-femmes-relais-aulnay.communication-pro.fr/public/1160/contenu/file/97738968111.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622dfbe4c6e89---57115748854.pdfIn PDF document text
    • https://ankaratutuncu.com/panel/kcfinder/upload/files/47911187103.pdfIn PDF document text
    • http://livelyway.com/ckfinder/userfiles/files/30198801634.pdfIn PDF document text
    • http://archive-2011.humandoc.pl/attachments/file/37377554351.pdfIn PDF document text
    • http://azv-goldeneaue-uthleben.de/kcfinder/upload/files/mabetiruvesani.pdfIn PDF document text
    • http://tlumacz-bialystok.pl/pliki/file/65716387624.pdfIn PDF document text
    • http://gwardiajuvenia.pl/zdjecia/fck/file/pawozefunalujapivafikano.pdfIn PDF document text
    • http://lingvastar.z-i-g-z-a-g.com/userfiles/files/nimaniluborafunon.pdfIn PDF document text
    • http://rlmlaw.com/images/edit_images/file/14517438445.pdfIn PDF document text
    • https://speedwayinfo.hu/uploads/file/renofevosufiminet.pdfIn PDF document text
    • http://alseera.com/admin/kcfinder/upload/files/fimiva.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/65b706c1029cb5b3e8ae3f6ed43c401e/lapewoxo.pdfIn PDF document text
    • http://mxagproducts.com/upload/browse/file/zagemakevezolanamureni.pdfIn PDF document text
    • https://ebmcordelles.progess.com/userfiles/file/74871720469.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/midilal.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_off00040e1d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00040e1d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00040e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40E1D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004253c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4253C 9992 bytes
SHA-256: b87222c1f8459b2ea3196935eae330641916886734a267bcbe206cf5686ed0c3
font_02_sfnt_off00043b5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43B5A 17240 bytes
SHA-256: 9423f6371e2ca66a52d641860e4073258887de3324f21788220f655c933464fa