Malicious PDF — malware analysis report

Static analysis result for SHA-256 60257f7074b9a2ae…

MALICIOUS

PDF

13.6 KB Created: 2019-04-30 04:32:48 +01:00 Authoring application: mPDF 5.7
MD5: 64bbbeb5973ae4aa81db9baefd5b973d SHA-1: d055dd11c2fdadadc25b505858996564e7d89d1e SHA-256: 60257f7074b9a2ae087a45794cc168be4f5ec5656c95a97b94a6938f62ff8c74
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, many of which are structured as book titles, suggesting a link farm or SEO poisoning tactic. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download button' heuristic further supports the intent to trick users into clicking links that likely lead to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/4a08a01a02a09a09/Bind-Me-Before-You-Go-Serve-8-by-Harper-Kincaid.pdf
    • http://muicuiu.dumb1.com/4a01a02a07a07a01/Bind-Me-Before-You-Go-Serve-8-by-Harper-Kincaid.pdf
    • http://muicuiu.dumb1.com/4a05a00a06a00/The-Call-to-Serve-The-Serve-1-by-Cece-Whittaker.pdf
    • http://muicuiu.dumb1.com/2a02a05a01a07a08/A-Merry-Harper-Holiday-John-Harper-Series-by-E-J-Holmes.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a02a02a05/They-Also-Serve-by-Bob-Sharpe.pdf
    • http://muicuiu.dumb1.com/8a05a01a04a07/To-Serve-Them-All-My-Days-by-R-F-Delderfield.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a02a01a08/They-Also-Serve-by-Donald-E-Westlake.pdf
    • http://muicuiu.dumb1.com/3a07a07a07a02a09/To-Protect-and-Serve-by-V-K-Powell.pdf
    • http://muicuiu.dumb1.com/1a04a05a09a04a03/Bind-Me-Absolution-3-by-Sophia-Scarlet.pdf
    • http://muicuiu.dumb1.com/8a02a09a09a00a01/The-Heresy-Within-The-Ties-that-Bind-1-by-Rob-J-Hayes.pdf
    • http://muicuiu.dumb1.com/7a02a08a03a00a02/The-Ties-That-Bind-by-Vanessa-Duri-s.pdf
    • http://muicuiu.dumb1.com/7a04a05a08a07/Capture-Me-amp-Bind-Me-by-Anna-Zaires.pdf
    • http://muicuiu.dumb1.com/3a06a01a05a05a00/The-Heresy-Within-The-Ties-That-Bind-1-by-Rob-J-Hayes.pdf
    • http://muicuiu.dumb1.com/4a09a01a09a02a08/The-Double-Bind-by-Chris-Bohjalian.pdf
    • http://muicuiu.dumb1.com/7a04a02a03a00a06/The-Ties-that-Bind-by-Emilie-Rose.pdf
    • http://muicuiu.dumb1.com/6a07a02a03a05a05/The-Ties-That-Bind-Never-Forgotten-by-S-A-J-Friederich.pdf
    • http://muicuiu.dumb1.com/2a02a05a07a08/Protect-amp-Serve-K-9-Policewoman-by-Maria-Larsen.pdf
    • http://muicuiu.dumb1.com/1a06a09a07a08a04/Bind-Me-Roommate-Romance-2-by-Rene-Folsom.pdf
    • http://muicuiu.dumb1.com/3a01a04a00a08a07/Exposed-by-Fate-Serve-2-by-Tessa-Bailey.pdf
    • http://muicuiu.dumb1.com/2a07a08a07a08a09/The-Tangled-Ties-That-Bind-by-Mary-Connealy.pdf

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