Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6590616dde84e3a…

MALICIOUS

PDF

15.4 KB Created: 2019-04-30 04:53:54 +01:00 Authoring application: mPDF 5.7
MD5: c562bf2e9ac5bcaab9c12d8498af602a SHA-1: 7e493c5a98de55c019a808d1f58c932269b43eff SHA-256: c6590616dde84e3aee967855ee715ca11a82c55497f2f3a7aba4a5847b121c7f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links pointing to external PDF documents on the domain 'muicuiu.dumb1.com'. This heuristic firing, combined with the ML classifier's high confidence, suggests a link-farming or redirection tactic. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure. The primary IOCs are the numerous URLs pointing to the suspicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/6a03a05a06a00a00/The-Decameron-of-Giovanni-Boccacci-Now-First-Completely-Done-Into-Engl-Prose-and-Verse-by-J-Payne-by-Giovanni-Boccaccio.pdf
    • http://muicuiu.dumb1.com/5a03a03a04a02/The-Decameron-by-Giovanni-Boccaccio.pdf
    • http://muicuiu.dumb1.com/2a02a02a00a05a06/Decameron-by-Giovanni-Boccaccio.pdf
    • http://muicuiu.dumb1.com/1a01a00a09a08a04a04/The-Decameron-by-Giovanni-Boccaccio.pdf
    • http://muicuiu.dumb1.com/3a02a08a07a05/The-Decameron-by-Giovanni-Boccaccio.pdf
    • http://muicuiu.dumb1.com/8a05a08a01a05a01/Decameron-Neuf-No-Fo-Bi-by-Giovanni-Boccaccio.pdf
    • http://muicuiu.dumb1.com/4a08a07a09a02a01/Life-of-Dante-by-Giovanni-Boccaccio.pdf
    • http://muicuiu.dumb1.com/1a05a06a07a04a06/Nikki-Giovanni-Poetry-Collection-by-Nikki-Giovanni.pdf
    • http://muicuiu.dumb1.com/1a01a06a07a04a02a00/The-New-One-by-Giovanni-Latacela-Crimi.pdf
    • http://muicuiu.dumb1.com/7a03a01a06a03a03/Baroques-by-Giovanni-Careri.pdf
    • http://muicuiu.dumb1.com/5a00a06a09a06a07/Scent-of-a-Woman-by-Giovanni-Arpino.pdf
    • http://muicuiu.dumb1.com/3a06a04a05a05a02/Giovanni-s-Room-by-James-Baldwin.pdf
    • http://muicuiu.dumb1.com/3a03a03a03a09/Giovanni-s-Room-by-James-Baldwin.pdf
    • http://muicuiu.dumb1.com/4a04a09a07a03a04/Walking-in-the-Shadows-by-Cassandra-Giovanni.pdf
    • http://muicuiu.dumb1.com/5a06a08a05a01a07/Giovanni-Giraud-by-Laura-Petrini.pdf
    • http://muicuiu.dumb1.com/3a05a00a01a07a03/The-Bottom-of-Your-Heart-by-Maurizio-de-Giovanni.pdf
    • http://muicuiu.dumb1.com/7a06a07a00a03a07/Giovanni-Bellini-by-Anchise-Tempestini.pdf
    • http://muicuiu.dumb1.com/4a04a06a06a05/Love-Poems-by-Nikki-Giovanni.pdf
    • http://muicuiu.dumb1.com/9a07a03a04a09a02/Behind-the-Lens-Boys-of-Fallout-2-by-Cassandra-Giovanni.pdf
    • http://muicuiu.dumb1.com/9a00a03a00a04a01/Cosas-de-la-Cosa-Nostra-by-Giovanni-Falcone.pdf
    • http://muicuiu.dumb1.com/4a08a07a09a02a01/Life-of-Dante-by-Giov

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