Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee282fe0aeda5f3…

MALICIOUS

PDF

41.5 KB Created: 2021-09-01 18:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 3632455f346235e1ffdf500d13495c45 SHA-1: 1b7eac9697ea9f387119423352afab83cd834273 SHA-256: 3ee282fe0aeda5f33a447dc27ad23ef0fb70833937a41ab8bad6145e066f6b5d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning model indicated maliciousness. It contains multiple embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting. While no scripts were extracted, the presence of numerous suspicious URLs suggests the document is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7225

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
  • 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 http://aircond.md/upload_fck/file/8904816909.pdf In PDF document text
    • https://webshopplus.nl/app/webroot/files/userfiles/files/bimifewepixi.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100060133bb3---weminos.pdfIn PDF document text
    • http://phutungquanghieu.com/app/webroot/files/ckfinder/files/60896756033.pdfIn PDF document text
    • http://soupworld.de/upload/file/47961885894.pdfIn PDF document text
    • http://nineslash.com/user_file/file/xaxototewarazodawogakaru.pdfIn PDF document text
    • http://whalesart.com/uploadfile/file///2021061310222139.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608626d62e128---sopuxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=pce+inflation+ratePDF link annotation

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