Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec577472082f725b…

MALICIOUS

PDF

67.9 KB Created: 2021-09-09 07:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 85a1576feeb60c923f8236a3956911dc SHA-1: f46d1e45e61f1272ecf54e6f26938d81d6bce167 SHA-256: ec577472082f725b65f0bb04ae6cb3e045a089fa7ff7137cd432bb0e32a0ad27
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of links, many pointing to compromised WordPress sites or disposable hosting. This indicates an attempt to redirect users to malicious content, likely for phishing or malware distribution. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4937

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
  • 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.
  • 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
  • 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://mb-classic-service.de/userfiles/file/vunuvo.pdf In PDF document text
    • http://galaxyjewel.cn/uploadfile/files/23502527622.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/824af69baa0feaad3662207d65ec6093/67986677658.pdfIn PDF document text
    • http://toroisg.com/public/images/files/vimorowato.pdfIn PDF document text
    • http://lactopad.com/uploads/files/85487480145.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/lorazomop.pdfIn PDF document text
    • http://rallyteamwalraven.nl/file/darajumanakat.pdfIn PDF document text
    • http://klwas.org/userfiles/images/file/dojifugokotom.pdfIn PDF document text
    • http://spartaksedlec.cz/spartaksedlec/userfiles/file/99812025639.pdfIn PDF document text
    • http://smartraoptics.com/fck_filemanager_upload/file/97375997866.pdfIn PDF document text
    • http://polipadel.com/userfiles/file/rerabifezamesudedubi.pdfIn PDF document text
    • http://stefani.cz/fck/file/68916135492.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/991198fba02b66da83c9b7bbeaa0e2d6/2286410046.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612f59b8e3a80---nukuwavenewolopu.pdfIn PDF document text
    • https://zegaoyun.com/calisma2/files/uploads/babonegalogupar.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/16eb7faee5082958aa2028395cb98a3a/zijimipu.pdfIn PDF document text
    • https://nsstore.mx/ckeditor/ckfinder/archivossubidos/files/kegomagowigifadigefuliv.pdfIn PDF document text
    • http://school15-tyumen.ru/f/mukodesamirugew.pdfIn PDF document text
    • http://hichipper.com/hichipper/uploadfile/file/2021090805272973499.pdfIn PDF document text
    • http://gardatrans.com/content/Files/xavazalanoziredavuf.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/zefobaxafevevu.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/xaxuxajuzobazivizelupav.pdfIn PDF document text
    • https://taperagi.com/contents/files/makarigowodafamolefewezon.pdfIn PDF document text
    • https://vibingvibes.com/userfiles/files/bezemanimepitijuz.pdfIn PDF document text
    • http://ingegnasrl.com/userfiles/files/gowamewogesosawawik.pdfIn PDF document text
    • https://www.creativetalentnetwork.com/ckfinder/userfiles/files/fipesajefakigejoriwufeja.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210901_C22215CD33E9D566.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=best+game+play+store+2020PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F8 17120 bytes
SHA-256: c8b10e15d3e651e1b8b51096c574e8d670ff0087f150fb4d0e740a1fa442d1b3

Open this report in the interactive analyzer, or submit your own file for analysis.