Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb08dff1fe3a5863…

MALICIOUS

PDF

70.3 KB Created: 2021-06-05 04:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6c5fc80a2f7c16bf155598a1bee41498 SHA-1: aee63129abaebb02a15fc8481184e4605c0bf4af SHA-256: fb08dff1fe3a5863d2abc839c96621a851965d64941575fe96c9e5d1d11d8223
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It contains numerous links to compromised WordPress sites, suggesting it's part of a link farm designed to distribute malware. The document body, though heavily obfuscated, appears to be a lure related to 'general ledger template in excel', aiming to trick users into downloading a payload from one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7277

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
  • 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://pixomot.ru/uplcv?utm_term=general+ledger+template+in+excel PDF link annotation
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec10af34e3---49982277971.pdfIn PDF document text
    • https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/de6834da856d2ea83139c3abc3783782/pomujavivakogu.pdfIn PDF document text
    • http://allseasonsart.com/uploads/fck_uploads/file/38661997032.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/81c76e2577ec0d8d90c277775890245a/36947310800.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad983386540---sikofin.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4f1521bc9---lurerefilifuva.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160928a8b3b15d---47523517248.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/445smm79e1fo8bllg7bjfr61vi/80266525088.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087294ddde89---zosof.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2b7c91057---18170132294.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d7bd762cf---julopufaxaxoxedadotemireb.pdfIn PDF document text
    • https://absolut-fit-and-dance.de/wp-In PDF document text

Related samples 8

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