Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ff328dea446b55…

MALICIOUS

PDF

14.2 KB Created: 2019-04-30 04:31:44 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-28
MD5: 6d2c5e32c30a00932a2fddb7d024f43e SHA-1: bccfd1a6b334a40de4f191a68fcfb6537bf935ab SHA-256: a2ff328dea446b5578cb89cf4a2309d8f2aab81ca265d2a5bc8b2ca1aff010a4
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, suggesting a phishing or redirection attempt. While the document body is heavily obfuscated, the presence of numerous external URLs points towards a malicious intent to redirect users. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://muicuiu.dumb1.com/4a05a06a03a05/Conrad-s-Fate-Chrestomanci-5-by-Diana-Wynne-Jones.pdf In PDF document text
    • http://muicuiu.dumb1.com/4a00a01a05a04a01/Conrad-s-Fate-Chrestomanci-5-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a01a06a01a06a00/Mixed-Magics-Four-Tales-of-Chrestomanci-Chrestomanci-7-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a01a07a08/The-Pinhoe-Egg-Chrestomanci-6-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a07a04a08a07/Charmed-Life-Chrestomanci-1-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a08a00a07a06/The-Magicians-of-Caprona-Chrestomanci-2-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a02a04a04a08/Charmed-Life-Chrestomanci-1-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a05a08a03a09a03/The-Magicians-of-Caprona-Chrestomanci-4-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a03a07a07a03/Witch-Week-Chrestomanci-3-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a00a07a08a03a09/Charmed-Life-Chrestomanci-1-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a06a04a05a01/The-Game-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a01a04a05a08a09/Power-Of-Three-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a06a03a08a01a08/Power-of-Three-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a08a01a00a05a02/Dogsbody-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a08a09a04a05a00/Fire-and-Hemlock-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a01a03a04a01/The-Time-of-the-Ghost-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a08a04a02a03a08/The-Time-of-the-Ghost-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a06a07a01a00/Enchanted-Glass-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a03a04a03a08/Earwig-and-the-Witch-by-Diana-Wynne-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a04a05a00a07a09/Minor-Arcana-by-Diana-Wynne-Jones.pdfIn PDF document text

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