Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7a1b31eb9ddcd2…

MALICIOUS

PDF

14.4 KB Created: 2019-04-30 04:04:18 +01:00 Authoring application: mPDF 5.7
MD5: a6eda23e2924755198823c68a20dc7e7 SHA-1: 381c9b9d21cda323c4b60a72f3a587a9e4061732 SHA-256: 6e7a1b31eb9ddcd29fe2cc6dab4cbdd7aec7c4e40a02a8471273f90d87896990
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While many of these links point to benign content, the sheer volume and the ML classifier's high confidence score suggest a malicious intent, possibly for SEO manipulation or to distribute further payloads. The presence of a 'download button' lure further supports this. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/3a01a06a02a00a05/White-Heat-Dept-6-Hired-Guns-1-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/1a00a08a01a08a08/Through-the-Smoke-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/9a03a07a04/Before-We-Were-Strangers-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/3a00a03a04a04a00/Dead-Right-Stillwater-3-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/4a05a04a08a05a05/Every-Waking-Moment-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/3a01a09a02a07a03/Every-Waking-Moment-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/1a08a06a01a09a02/Dead-Silence-Stillwater-1-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/2a00a06a06a02/Dead-Giveaway-Stillwater-2-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/2a02a00a08a02a01/When-Summer-Comes-Whiskey-Creek-3-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/1a00a08a03a05a09/The-Perfect-Liar-The-Last-Stand-5-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/2a00a08a03a03/A-Home-of-Her-Own-Dundee-Idaho-4-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/1a01a02a05a09a07a00/No-One-But-You---Hanya-Dirimu-Silver-Springs-2-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/1a01a09a00a01a05a04/We-Saw-Mommy-Kissing-Santa-Claus-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/2a02a04a07a01a01/Take-Me-Home-for-Christmas-Whiskey-Creek-5-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/3a09a02a08a06a04/Hanover-House-The-Evelyn-Talbot-Chronicles-0-5-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/1a01a02a02a05a04a01/A-Dundee-Christmas-Dundee-Idaho-8-5-by-Brenda-Novak.pdf
    • http://muicuiu.dumb1.com/4a04a02a02a07a04/The-White-Guns-by-Douglas-Reeman.pdf
    • http://muicuiu.dumb1.com/2a09a07a05a02a08/Hired-Gun-Hired-Gun-1-by-A-J-Bennett.pdf
    • http://muicuiu.dumb1.com/6a06a06a08a02a05/White-Heat-by-Oasis-.pdf
    • http://muicuiu.dumb1.com/4a07a02a01a08a07/White-Heat-by-Paul-D-Marks.pdf

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