Malicious PDF — malware analysis report

Static analysis result for SHA-256 4504355d6a6a56b4…

MALICIOUS

PDF

174.1 KB Created: 2021-12-30 20:29:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: efa01d6213a8d92c3d3a377c1078cfbf SHA-1: d8fab60e8c7dce5096d659a04ac6e7d47112c79f SHA-256: 4504355d6a6a56b485ad0998e6f6eaaa539fbe4cfc850a23ca6b2e9bf840c80e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9692

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
  • 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.
  • 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://cdmvt.cz/sites/default/files/gedijukiruremodos.pdf In PDF document text
    • http://ranjoysarkar.in/FCKeditor/file/benixa.pdfIn PDF document text
    • http://studioaeditecne.it/userfiles/file/89022917203.pdfIn PDF document text
    • http://pneusmarene.it/images/file/gazafokejaf.pdfIn PDF document text
    • https://szabolcsipeter.com/userfiles/file/lafudojoriwelono.pdfIn PDF document text
    • http://tajeer.co/userfiles/file/pazinemogutiriv.pdfIn PDF document text
    • https://niceppl.com/images/file/dovunebiposixek.pdfIn PDF document text
    • http://mkpstroitel.ru/upload/files/21004916709.pdfIn PDF document text
    • http://nj-rshb.com/v15/Upload/file/20211241158215789.pdfIn PDF document text
    • http://kazbani.ru/kcfinder/upload/files/vedekifajufazusoze.pdfIn PDF document text
    • http://suliaox.com/v15/Upload/file/20211116137354033.pdfIn PDF document text
    • http://www.saletime.gr/admin/fckfiles/file/47614155429.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/pemis.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619c5c25bfbad---80362032288.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/simeritezu.pdfIn PDF document text
    • https://barrier.exma.cl/ckfinder/userfiles/files/gefikuzirakusofafo.pdfIn PDF document text
    • https://egc.ecrom.work/syo/files/22559405678.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/80496530637.pdfIn PDF document text
    • http://a2hgghk.handylover.com/upload/files/zamabufono.pdfIn PDF document text
    • https://smartcirclegroup.com/userfiles/file/74087833610.pdfIn PDF document text
    • https://losungversorger.com/product/file/28366600997.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/xPAns0MRe5M/uplcv?utm_term=angular+formdata+append+numberPDF 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_off0002476c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002476c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002476c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2476C 10800 bytes
SHA-256: af535cd455b3b6e3839ab60b3671e34e9b9ccbad2400b76fd2f3d9448126954f
font_01_sfnt_off00025fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25FE6 19156 bytes
SHA-256: c8e7494fd0d238b3f1c60bff3a27547efb1853e66c89ad22e4cf9cf9b5ecbba6
font_02_sfnt_off000291f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x291F9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336