Malicious PDF — malware analysis report

Static analysis result for SHA-256 9762b23ea1563a42…

MALICIOUS

PDF

65.2 KB Created: 2021-06-02 11:18:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 616737c2228547d20e680517a0553342 SHA-1: a76967637bca5066698904cb5e019838e6e64ef4 SHA-256: 9762b23ea1563a42cc110e0d9e89672354f0b3b4a3aef409dcc2055894e21956
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further malware or conducting phishing operations. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7290

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://cavalier-hundezucht.ch/userfiles/file/43711069004.pdf
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/f6c291744d8e51776ddfc058769c42d2/widuropezuwomutesonu.pdf
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/a771fcf050cdc648a5437797eefcd3af/36185193545.pdf
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/3a2a58b38e02b6be57f7346895ffc9bc/16137806451.pdf
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b63240e2089---xejaf.pdf
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/009ec3f9103a7e6b34c77e1372bc5c6e/17303532606.pdf
    • http://mppscstudy.com/admin/usercontent/file/4743657707.pdf
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9cfb84531---67245170383.pdf
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/8m7akg6hn789mih4l3qena0gp3/1254757861.pdf
    • http://veterina-hrib.cz/user-uploads/files/gajal.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160832434c01e9---11087392055.pdf
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/2cd5ddbcde7086188f40670de9c8c64f/dobixiv.pdf
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/0c2fb45769893c51433817c2854dfa49/zoxusosawavubukuzolumu.pdf
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16089c5c3cab73---fadapegumigozijonifevet.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=williams+pinball+machines+parts