Malicious PDF — malware analysis report

Static analysis result for SHA-256 2142f3cbe58f719b…

MALICIOUS

PDF

66.5 KB Created: 2021-09-05 06:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 6c38095b4d452790c2b30099889aff8f SHA-1: 568921308de3c9c31f0847fc009a66949ef0fa96 SHA-256: 2142f3cbe58f719b0f142049fbc62d1ca24254c0129ee45287d61289168a83f3
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The heuristics indicate that the sample is a phishing or malware distribution attempt, with multiple URLs pointing to potentially compromised WordPress sites or other unknown hosts. The embedded JavaScript likely facilitates the redirection to these malicious URLs, aiming to trick the user into downloading further payloads or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5597

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://pho32shabu.com/uploads/files/32011703479.pdf In PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/59393502582.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610074adde809---mudutufepixipiturupogased.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6a60d26bc5---tiwonopolamilusafibo.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9ad82cd394---wasejaximuvafupuximuwiw.pdfIn PDF document text
    • http://blow-w124.com/js/upload/files/xuganubefekuboxikatep.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/07afeaec5c05445835d1457e0270ca92/80477848238.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-foIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=civisme+et+developpement+pdfPDF link annotation

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