Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf7e665fca905db…

MALICIOUS

PDF

47.6 KB Created: 2021-09-09 02:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a71eeb07342305fc6f30e95e3aabbabd SHA-1: 626c5ecfd8ddde5871b437360bfcfc01bb6807b5 SHA-256: 7bf7e665fca905dbbf2810b1dd570f42f2e86fd85f95d0cb5a988c937f6deda3
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains multiple links, several of which point to compromised WordPress sites hosting PDF files. One such link is http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/31e5ee3a20f9fd7ce8d326f32b6af8ca/nekefasovev.pdf, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4184

Heuristics 4

  • 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.
  • 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://laplacedesstores.com/upload/file/58311657922.pdf In PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/31e5ee3a20f9fd7ce8d326f32b6af8ca/nekefasovev.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613333471e426---23313833909.pdfIn PDF document text
    • http://chongros.com/userData/board/file/1578993126.pdfIn PDF document text
    • http://turksebruiloften.nl/userfiles/file/naxikapusumexesazum.pdfIn PDF document text
    • http://rund.cz/UserFiles/File/43564277627.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613366e0b8793---nubexiwilurajonugadu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=present+perfect+present+continuous+present+simple+exercisePDF link annotation

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