Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e38a1e382f0a4f…

MALICIOUS

PDF

15.6 KB Created: 2019-04-30 08:10:26 +01:00 Authoring application: mPDF 5.7
MD5: 759b25b228353be334b55598ae5b0d5d SHA-1: 863ce9012e0abd96ca93c1f1054e2fe817e5d563 SHA-256: e5e38a1e382f0a4f029a7a6b428b6e34ddd77977a18b143864eeab20e9fcfe9c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, characteristic of a link farm. The ML classifier also flagged this document as malicious. While the specific intent of the link farm is unclear, it likely serves to direct users to malicious content or to manipulate search engine rankings. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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.du
    • http://muicuiu.dumb1.com/5a02a01a07a08a03/Devils-River-Treacherous-Twin-to-the-Pecos-1535-1900-by-Patrick-Dearen.pdf
    • http://muicuiu.dumb1.com/7a00a05a07a08a04/Best-Laid-Plans-The-Best-Girls-4-by-Tamie-Dearen.pdf
    • http://muicuiu.dumb1.com/4a04a00a02a09a08/Best-Intentions-The-Best-Girls-Book-5-by-Tamie-Dearen.pdf
    • http://muicuiu.dumb1.com/3a06a08a00a04a02/All-In-The-Drift-2-by-Susan-Hayes.pdf
    • http://muicuiu.dumb1.com/8a01a02a09a05a03/Slide-or-Die-Drift-X-1-by-Todd-Strasser.pdf
    • http://muicuiu.dumb1.com/1a01a00a07a00a03/Drift-Race-by-David-Jubermann.pdf
    • http://muicuiu.dumb1.com/1a00a01a03a06a07a06/The-Drift-Wars-by-Brett-James.pdf
    • http://muicuiu.dumb1.com/3a06a08a00a03a09/Double-Down-The-Drift-1-by-Susan-Hayes.pdf
    • http://muicuiu.dumb1.com/1a05a04a06a08a02/Shadowline-Drift-by-Alexes-Razevich.pdf
    • http://muicuiu.dumb1.com/2a04a07a06a07a07/The-Drift-Hans-Larsson-1-by-Chris-Thrall.pdf
    • http://muicuiu.dumb1.com/4a08a08a01a05a04/Drift-Silver-Strand-5-by-Steph-Campbell.pdf
    • http://muicuiu.dumb1.com/2a02a07a01a07a09/Drift-House-The-First-Voyage-by-Dale-Peck.pdf
    • http://muicuiu.dumb1.com/2a01a05a01a04a03/The-Drift-House-The-First-Voyage-by-Dale-Peck.pdf
    • http://muicuiu.dumb1.com/1a01a00a07a06a01/Scythe-Dimension-Drift-Prequels-1-by-Christina-Bauer.pdf
    • http://muicuiu.dumb1.com/3a08a04a07a07a04/Arctic-Drift-Dirk-Pitt-20-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/1a02a02a03a00a09/Scythe-Dimension-Drift-Prequels-1-by-Christina-Bauer.pdf
    • http://muicuiu.dumb1.com/4a05a06a02a02a06/The-Halcyon-Drift-Hooded-Swan-1-by-Brian-Stableford.pdf
    • http://muicuiu.dumb1.com/4a04a00a06a03a09/The-Billionaire-s-Reckless-Marriage-The-Limitless-Clean-Billionaire-Romance-Series-Book-2-by-Tamie-Dearen.pdf
    • http://muicuiu.dumb1.com/3a08a05a03a01a00/Rorke-s-Drift-1879-Pinned-Like-Rats-in-a-Hole-by-Ian-Knight.pdf
    • http://muicuiu.dumb1.com/4a06a00a08a03/Vermilion-Drift-Cork-O-Connor-10-by-William-Kent-Krueger.pdf

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