Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f73c58ca462880…

MALICIOUS

PDF

79.1 KB Created: 2022-04-12 13:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 148727ef7dd45e0fd34fc99529492086 SHA-1: 49a9c5cb7c9a2ce329e4dd7a2dd80f9ab15ec63d SHA-256: a4f73c58ca4628800d02921f03cb4ec65e07761123e8aec5356601eaa85efdf0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cafij.co.za/YmrXLWy8?keyword=traxxas%20velineon%20vxl-3s%20electronic%20speed%20control PDF link annotation
    • https://mukafakurud.weebly.com/uploads/1/3/4/3/134315218/tekurajumimux.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/janijalinibawop.pdfIn PDF document text
    • https://lepoboniw.weebly.com/uploads/1/3/0/9/130969744/448fc2ca84dc40.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1622f5bf8ec061---tatuve.pdfIn PDF document text
    • https://pejedakava.weebly.com/uploads/1/3/1/4/131453393/gisukuvada.pdfIn PDF document text
    • https://kajukijuxuvame.weebly.com/uploads/1/3/5/3/135329863/9256768.pdfIn PDF document text
    • http://inwama4.vn/webroot/img/files/89506519532.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/lunexanutuf.pdfIn PDF document text
    • https://www.yukule.com/ToBeDeleted/admin-assets/js/ckeditor_4.6.2_standard/kcfinder/upload/files/34987401908.pdfIn PDF document text
    • https://tuzunogosur.weebly.com/uploads/1/3/0/8/130815213/vidonivenif.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16215966061724---25653632130.pdfIn PDF document text
    • https://gp-lighting.com/editor_upload/file/pifepirasasamip.pdfIn PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/ee42e366d6e4.pdfIn PDF document text
    • https://webrekruit.com/php_codes/Scott/VieauAssociates/code/userfiles/file/55946195353.pdfIn PDF document text
    • https://dev-intranet.publiticket.fr/intranet/upload_fckeditor/file/tuvasijid.pdfIn PDF document text
    • https://nuwudune.weebly.com/uploads/1/3/4/3/134362296/sepirawi.pdfIn PDF document text
    • https://niagarablock.com/application/webroot/userfiles/file/xemiduvuvezunavebogob.pdfIn PDF document text
    • https://www.camaragranada.org/administracion/kcfinder/upload/files/88641161910.pdfIn PDF document text
    • https://illinoisfiscalpolicycouncil.org/app/webroot/userfiles/file/90525900010.pdfIn PDF document text
    • https://morganmethod.tuesdaytrader.com/ci/userfiles/files/53774041945.pdfIn PDF document text
    • http://rlangkhan.com/upload/userfiles/files/83519101959.pdfIn PDF document text
    • http://retrofotr.cz/files/file/8854797738.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_off0000ce51.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000ce51.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE51 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE663 17528 bytes
SHA-256: 7b204cdd1fbc45553ba8b94bad7923145ec32a0ae3193dd81a3deaf82e168a35
font_02_sfnt_off00011486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11486 10844 bytes
SHA-256: c8e8ab6605e0c3b6c1e6c5586ea4ffac0aea56751a986cc94cfa5a5570c97847