Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fad975ab764bdb…

MALICIOUS

PDF

393.7 KB Created: 2022-01-13 05:28:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: cc432e408b18c969922f3f60a592549b SHA-1: c6ae3513ef7dd41fe0c6c03a29e379b7554bf1a7 SHA-256: a4fad975ab764bdb0f2be0a4776227c252b758ebdb07d154cf57e91a3e74c087
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7309

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 http://sure2trips.com/bot/ckfinder/uf/files/99641375826.pdf In PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/cb5b54476df40201805fe0022296ff4a/pepedotusabarurip.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/dunimakebabonivubajodogoj.pdfIn PDF document text
    • http://abbeytraining.net/userfiles/file/bujumezoguvotakosope.pdfIn PDF document text
    • http://jar-ted.pl/file/67484442785.pdfIn PDF document text
    • http://iproperty.ae/userfiles/file/71246636415.pdfIn PDF document text
    • https://editionsitaliques.com/userfiles/file/wepavu.pdfIn PDF document text
    • http://www.hausbaumesse.at/ckfinder/userfiles/files/10658431145.pdfIn PDF document text
    • http://balalajka.ompom.se/media/rominerazavefatipafawedi.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/df3c295ad85a92cb136037953d65af3e/lafuzazavututogiwu.pdfIn PDF document text
    • https://saigonservices.vn/images/uploads/files/wurepulitivimajaxezivajo.pdfIn PDF document text
    • http://houselandia.ru/files/texodegadelixexifubapakuv.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/lamelajiped.pdfIn PDF document text
    • https://subarini.sibiuimobiliare.ro/mm/file/magexorife.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/28090613189.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/ae43c710cd82423aab726380478e5000/34026475502.pdfIn PDF document text
    • http://vas-vill.hu/userfiles/file/75906796225.pdfIn PDF document text
    • http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/90118830424.pdfIn PDF document text
    • http://dragoniresorts.com/userfiles/29829300704.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/43628682335.pdfIn PDF document text
    • http://emusicmarket.com/upfile/board/files/58655948163.pdfIn PDF document text
    • http://nsk-nalogov.net/upload/files/92419560148.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/bd2fe1a16be6ca39bce06718362a4431/9098836015.pdfIn PDF document text
    • http://emekyesiltepe.net/images_upload/files/94715497003.pdfIn PDF document text
    • https://ewt.cz/res/file/fozad.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HTGXzuRVGb4/uplcv?utm_term=information+report+african+elephantsPDF link annotation
    • 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_off0005b2ce.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b2ce.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2CE 19756 bytes
SHA-256: cd9f475fc246d3941e446ba56da48864c8628b7444fbe6ca63849333612d641d
font_01_sfnt_off0005e6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6F7 10696 bytes
SHA-256: d85cac6522f8ab40b488f10846acd2687aefa6da1a932419f25ed57570b70454
font_02_sfnt_off0005ff49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF49 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336