Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f3d1bef9e9784b…

MALICIOUS

PDF

68.8 KB Created: 2022-04-09 21:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: d63d894a11b5aadbf60c7ca1f35f243b SHA-1: c2694b511cd2f890beb35257b457d0fcadf8589a SHA-256: a4f3d1bef9e9784b3b7b435f2061af90f7a9d5e71e1b7666a95c3c3875a4da48
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://yubit.co.za/YmrXLWy8?keyword=franz%20kafka%20short%20stories%20amazon PDF link annotation
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/07a3ddd4d820ee6ec670bb976d58f62f/jiramufet.pdfIn PDF document text
    • http://jyotiacademicpress.org/uploads/file/81726888981.pdfIn PDF document text
    • http://zawodydrwali.pl/app/webroot/userfiles/file/boxitixefafuw.pdfIn PDF document text
    • http://divinenine.net/userfiles/file/balodokunazajuru.pdfIn PDF document text
    • https://paniwotipetusu.weebly.com/uploads/1/3/4/6/134614288/4d6ea66db281.pdfIn PDF document text
    • https://satbietthu.com/luutru/files/dosebedepimusunugugiwefu.pdfIn PDF document text
    • https://www.3zslitomysl.cz/admin/editor/kcfinder/upload/files/23338908682.pdfIn PDF document text
    • http://bccp-cam.com/kcfinder/upload/files/97007077521.pdfIn PDF document text
    • https://henseltech.cz/userfiles/file/77824385621.pdfIn PDF document text
    • https://md-bud.pl/szklo/photos/file/63003604442.pdfIn PDF document text
    • http://hissekurban.com/resimler/files/5155360987.pdfIn PDF document text
    • http://kleinschaden-expert.de/userfiles/file/93629466077.pdfIn PDF document text
    • https://zodutizedekewe.weebly.com/uploads/1/4/1/3/141315310/092ceebe85e7e.pdfIn PDF document text
    • http://ohdiabo.net/images/ckeditor/files/bugisovupu.pdfIn PDF document text
    • https://www.bluelabs.it/shazar/admin/assets/js/ckeditor/kcfinder/upload/files/files/zuwubelibegonigivabazeb.pdfIn PDF document text
    • https://novamakine.com/upload/ckfinder/files/75883668369.pdfIn PDF document text
    • https://www.adamtraveljordan-ru.com/mypanel/includes/ckeditor/kcfinder/upload/files/sipuloni.pdfIn PDF document text
    • https://fetedujas.weebly.com/uploads/1/3/0/7/130776810/9566676.pdfIn PDF document text
    • https://vietrocknet.org/app/webroot/img/files/linurilivugaxalolot.pdfIn PDF document text
    • http://labotinnghia.com/img/files/kepetoxore.pdfIn PDF document text
    • https://mlm1.scriptgiant.com/tempimg/file/kizugojejatepakovuze.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_off0000a7cd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000a7cd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000bfdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFDF 17664 bytes
SHA-256: b75d28da91da58458fedb786f2508d649602d6a5bffa6fc3f91f8c4cb9b248a5
font_02_sfnt_off0000edd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD5 10564 bytes
SHA-256: 000b1bfdc0faf4d7289b79aaefb6e26f8c04a6b8a30316feac052e65534fc3c8