Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ca3cd2bc7e4a6a…

MALICIOUS

PDF

299.3 KB Created: 2022-02-22 21:48:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: 8500bc4ac3375bd4716ce9d38c25d9f2 SHA-1: a1c6e9d79a56d32bbfd89c2471627fc1b1029f54 SHA-256: a9ca3cd2bc7e4a6a8b8e93c9915675469230d9ac116711ca85c09b2f5a365af1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7334

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://mifuj.co.za/XSRYdR1H?utm_term=happy+new+year+card+templates+free PDF link annotation
    • http://tongchangkj.com/uploadfile/file///2021112800451153.pdfIn PDF document text
    • http://rockefellersgold.hu/editor_up/76691181869.pdfIn PDF document text
    • https://speculatio.in/userfiles/file/78667901364.pdfIn PDF document text
    • http://davidthurstonphotography.co.uk/ckeditor/kcfinder/upload/files/gorasepikukiko.pdfIn PDF document text
    • https://cafesca.org/ckfinder/userfiles/files/wimokifewajonukubus.pdfIn PDF document text
    • http://wakabaeducation.com/userfiles/file/55896605969.pdfIn PDF document text
    • https://heart-calligraphy.com/uploads/files/202201140401056461.pdfIn PDF document text
    • http://dhs-bank-sample.com/app/webroot/js/kcfinder/upload/files/32218714852.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/f77ob1o4t9csbcmpomanbjm1k3/3034294624.pdfIn PDF document text
    • http://yildizteknikelektrik.net/resimler/files/depepivaj.pdfIn PDF document text
    • http://cnmrobotics.com/files/files/muwegulajakolorapironuk.pdfIn PDF document text
    • https://irepairplus.nl/app/webroot/files/userfiles/files/nogotutumobesenolexe.pdfIn PDF document text
    • http://muabannhagiare.net/images/uploads/files/4090149056.pdfIn PDF document text
    • https://etcbt.com/userfiles/file/ginunodesowef.pdfIn PDF document text
    • http://unicaconsultoriarh.com/images/files/koteb.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/mipelanofaka.pdfIn PDF document text
    • https://websbag.com/uploads/files/8117018843.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/162097be79e26a---26475195991.pdfIn PDF document text
    • http://rw-hse-businessconsulting.de/userfiles/file/26847656154.pdfIn PDF document text
    • http://smwiarus.pl/ckfinder/userfiles/files/tedilazomogevonirizo.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/1ddc868d1ad4d2f91b4ada2957c197a6/botofodinufuwixatad.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/3db1e978eaca98b81c6ce2cc7759c173/64648733912.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/87f81756eabb6d13ac88c21283248fe6/perimidejevejunipapupobiw.pdfIn PDF document text
    • http://kappp.ru/js/ckfinder/userfiles/files/donunoxetax.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/161eaa6acae1b8---muroxejelofoz.pdfIn PDF document text
    • http://innova-perila.ru/upload/files/gonalugud.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_off00043f65.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00043f65.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43F65 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00045680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45680 17988 bytes
SHA-256: 8788bc2372b30f9d90b46e4f553bdaf59b0c08bd040a61280d06e4810b71810a
font_02_sfnt_off0004854e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4854E 10760 bytes
SHA-256: e381190a276630d614bec0f0d3117ef97794d2a71bb7a832623332e1bad5cf0b