Malicious PDF — malware analysis report

Static analysis result for SHA-256 add9e9c6883eb9eb…

MALICIOUS

PDF

12.7 KB Created: 2019-05-03 06:25:30 +01:00 Authoring application: mPDF 5.7
MD5: f83868f045a192d1bcd1291c7baba554 SHA-1: 49a087acdde10dd27417c6d50545735d04c273c1 SHA-256: add9e9c6883eb9eb0d049a94b3de12442e94e2f9ca01a64de283e35333bc2f4c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO poisoning or to drive traffic to malicious sites. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a more detailed analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

Heuristics 2

  • 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.
  • 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/4a04a06a05a06a09/No-Man-s-Land-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/1a02a03a08a06a04/Our-Man-in-Havana-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/3a00a03a09a03a02/Our-Man-in-Havana-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/2a07a00a01a07a06/The-End-of-the-Affair-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/2a04a00a09a08a00/The-Tenth-Man-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/2a08a08a07a06a02/A-Gun-for-Sale-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/1a03a07a00a09a00/The-Tenth-Man-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/4a04a06a01a01a00/The-Ministry-of-Fear-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/9a00a03a08a08a03/Brighton-Rock-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/5a00a00a08a03a04/Monsignor-Quixote-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/2a05a09a09a06a02/The-Quiet-American-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/4a01a00a08a00a08/The-Ministry-of-Fear-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/2a05a07a05a01a07/Journey-Without-Maps-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/7a04a02a07a06a01/Loser-Takes-All-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/4a01a00a00a03a07/The-Heart-of-the-Matter-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/2a00a05a01a00a00/The-Power-and-the-Glory-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/3a03a01a07a09/The-Power-and-the-Glory-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/8a09a01a05a09/The-Ministry-of-Fear-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/4a07a05a07a03a05/A-Sort-Of-Life-by-Graham-Greene.pdf
    • http://muicuiu.dumb1.com/4a03a09a06a03a08/The-Power-and-the-Glory-by-Graham-Greene.pdf

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