Malicious PDF — malware analysis report

Static analysis result for SHA-256 761d7558fbbbc08e…

MALICIOUS

PDF

55.3 KB Created: 2021-06-09 12:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 58f62b690cfb3b57054b18a39a406d2d SHA-1: d93eacf3c56eb99f6e244390c1fae1359f995c72 SHA-256: 761d7558fbbbc08e070e3eb1805076d5ed20a6d013831f67f54bc279fbde9d4e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm or phishing lure. The embedded URLs, such as 'https://oniceh.ru/uplcv?utm_term=allu+arjun+ki+movie+surya', are likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9134

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://oniceh.ru/uplcv?utm_term=allu+arjun+ki+movie+surya PDF link annotation
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16073af3db5b66---juzaw.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/vumokodapekidinozevin.pdfIn PDF document text
    • http://compufoxmail.com/userfiles/file/pobosawusupimutufixabixoz.pdfIn PDF document text
    • https://vansuloi.com/uploads/userfiles/file/totokujusut.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088c719dc321---lakefet.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3ee7cd2ae---9628288566.pdfIn PDF document text
    • http://murphysbeads.com/clients/54316/File/nibimikudaga.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/ba04627fe65bdb5065b50a9f28da58f8/78849423502.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/65a3bf08a3917f02805603bf2750050c/22298975309.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/d2da46eeb522b0d07f4a865736bd3e23/nonalufusoto.pdfIn PDF document text
    • http://tantex.org/tantex/tantexuserfiles/file/2834833725.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/cd29431830333d453af6451808349540/xabilezomikodit.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2548c835f---4804020712.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608559257be70---3273346412.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1609448c895a42---fabavufubabudifaga.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/f540gvshm5o175av3b1t7idif1/69470102891.pdfIn PDF document text

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