Malicious PDF — malware analysis report

Static analysis result for SHA-256 295bf618635ebcca…

MALICIOUS

PDF

296.9 KB Created: 2021-06-08 18:21:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 903412a966a0c3cf48a2b57164d29a38 SHA-1: 2e56724980bbe6ccdd302184e9f84551951a57e3 SHA-256: 295bf618635ebccaa5fcedf1956e387d6b6fa42f8af5800bed47787e9e472df5
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, one of which is presented as a search result for a book, likely a lure to trick users into clicking. The presence of PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristic and multiple URLs hosted on compromised WordPress sites suggests a phishing or malware distribution campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5166

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://oniceh.ru/uplcv?utm_term=kamasutra+full+book+in+english+with+pictures+pdf PDF link annotation
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607823d9c0a23---26706347292.pdfIn PDF document text
    • http://accomplishtheimpossible.com/userfiles_ati/file/batogujiboxudavuremo.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1609333a2c68c3---fokigad.pdfIn PDF document text
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/324043051019cbe6472d19e3bcda81a9/70306671064.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/ur3js113pquv8es6aqg8k88se0/73841753256.pdfIn PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/puxunibuwajo.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/58paqa9ff4643iefahg4svnn50/41289160409.pdfIn PDF document text

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