Malicious PDF — malware analysis report

Static analysis result for SHA-256 881aa233c901749d…

MALICIOUS

PDF

15.2 KB Created: 2019-04-30 04:21:10 +01:00 Authoring application: mPDF 5.7
MD5: 8ad9536ce2aef1df84a8d62c180ff9d7 SHA-1: a8ff3b107652cfd8b636461b8e1717da8d405d1e SHA-256: 881aa233c901749d9773bacee411108e777be56e11b8b98e88d4469fa42f291e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which are structured as book titles, suggesting a link farm designed to deceive users into clicking. The heuristic 'PDF_SEO_LINK_FARM' and the presence of numerous URLs strongly indicate this malicious intent. While no scripts were extracted, the document's structure and the ML classifier's high confidence score support the assessment of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/3a00a04a05a07a07/The-Shattered-Vine-Vineart-War-3-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/1a04a02a02a02a07/Burning-Bridges-Retrievers-4-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/2a01a08a05a08a03/Otherwere-Stories-of-Transformation-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/1a09a06a03a01a01/Free-Fall-Retrievers-5-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/1a04a02a00a02a04/Staying-Dead-Retrievers-1-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/3a04a00a00a01a00/Red-Waters-Rising-The-Devil-s-West-3-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/8a08a04a09a05a02/Morgain-s-Revenge-Grail-Quest-2-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/1a06a03a09a07a08/Dragon-Justice-Paranormal-Scene-Investigations-4-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/3a04a03a02a01a08/West-Wind-s-Fool-and-Other-Stories-of-the-Devil-s-West-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/4a08a06a02a00a07/Shattered-Minds-False-Hearts-2-by-Laura-Lam.pdf
    • http://muicuiu.dumb1.com/2a02a08a03a05a05/Hope-for-the-Hopeless-An-Autobiography-of-John-Vine-Hall-1865-by-John-Vine-Hall.pdf
    • http://muicuiu.dumb1.com/4a02a00a01a09a00/Shattered-Shattered-Hearts-1-by-Nicole-Banks.pdf
    • http://muicuiu.dumb1.com/1a04a04a09a02a05/Shattered-Hearts-Series-Omnibus-Edition-Shattered-Hearts-2-4-by-Cassia-Leo.pdf
    • http://muicuiu.dumb1.com/3a01a04a09a06a07/Shattered-Glass-Shattered-Glass-1-by-Dani-Alexander.pdf
    • http://muicuiu.dumb1.com/2a08a04a09a08a01/L-o-v-e-L-o-v-e-1-by-Kate-Vine.pdf
    • http://muicuiu.dumb1.com/2a03a03a06a04a00/Laura-s-Early-Years-Collection-Little-House-1-2-4-by-Laura-Ingalls-Wilder.pdf
    • http://muicuiu.dumb1.com/6a02a05a05a03/Something-From-Nothing-by-Phoebe-Gilman.pdf
    • http://muicuiu.dumb1.com/3a09a09a05a01a09/Something-from-Nothing-by-Phoebe-Gilman.pdf
    • http://muicuiu.dumb1.com/1a00a09a00a01a04/The-Vine-Tattoo-by-T-J-Waller.pdf
    • http://muicuiu.dumb1.com/3a07a00a04a08a01/The-Minotaur-by-Barbara-Vine.pdf

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