Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5daf40229556b82…

MALICIOUS

PDF

230.1 KB Created: 2022-02-28 10:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 2792404ffc763f5ef314333b23bc753b SHA-1: ee14219bc53a821d95bbc58951d84333521b3f3e SHA-256: c5daf40229556b82a25a0974c38aca8a617c43680015cda7f3091b511d788e95
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains an embedded JavaScript stream and a high-confidence heuristic indicates it is a malicious phishing lure. The document body is heavily obfuscated, but the presence of a link farm pointing to compromised WordPress upload storage and a redirector URL suggests an attempt to deliver a malicious payload. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8404

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lazav.co.za/XSRYdR1H?utm_term=forrester+report+robotic+process+automation PDF link annotation
    • https://thermaltrailrace.com/imagini_ws/64647902912.pdfIn PDF document text
    • http://saoz.sk/assets/kcfinder/upload/files/zudosejoxi.pdfIn PDF document text
    • http://look.bio/kcfinder/upload/files/87440437345.pdfIn PDF document text
    • http://elma-itc.ru/!upload/files/99972855680.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/42124106742.pdfIn PDF document text
    • http://avandcie-automation.com/ckfinder/userfiles/files/zupuruwu.pdfIn PDF document text
    • http://dioblina.eu/userfiles/file/lefiteragogijijoki.pdfIn PDF document text
    • https://akemi.ro/hirek/file/zigoxineposevaf.pdfIn PDF document text
    • https://chinatupai.com/web/js/ckfinder/userfiles/files/89556332175.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/b140f53affc979ee085700bc620d4448/nugavilesibes.pdfIn PDF document text
    • https://felicityokolo.com/file/pexoz.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16208d64336853---suniv.pdfIn PDF document text
    • http://spellenindex.nl/images/uploads/senevosaderoxijenut.pdfIn PDF document text
    • https://crawfordpoint-ca.seeninherd.com/files/70830625633.pdfIn PDF document text
    • https://patriciogaete.com/upload/file/pawimifujobamilumefiv.pdfIn PDF document text
    • http://honderhotel.com/UploadFiles/FCKeditor/20220213220128.pdfIn PDF document text
    • https://trungtamchonggia.vn/kcfinder/upload/files/89684041800.pdfIn PDF document text
    • https://soyana.de/js/ckfinder/userfiles/files/rozawupilobinasu.pdfIn PDF document text
    • http://learningkey.org/userfiles/87608066266.pdfIn PDF document text
    • http://xn--80aaaaadfwa5aftjhxrkcrg8iwc.xn--p1ai/pict/file/kabek.pdfIn PDF document text
    • https://behbehaniprojects.com/uploads/files/20276446284.pdfIn PDF document text
    • http://niuwa6.com/userfiles/file/26377529390.pdfIn PDF document text
    • https://aqua2go.pl/galeria/file/tixetumamuzab.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1621097300075f---mupibivapolipotos.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00032736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32736 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00033e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E51 18732 bytes
SHA-256: 285511344ae695aa6bb6c81a1067ca24a0b6a3ec4e65829af4e261ae71ee78ad
font_02_sfnt_off00036f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36F8C 10708 bytes
SHA-256: 010fbb4ee58e6191b00773172df0948e4d19d114498b6877f44b132c1ed7a3f2