Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c60c496c1f896e…

MALICIOUS

PDF

15.8 KB Created: 2019-04-30 05:13:43 +01:00 Authoring application: mPDF 5.7
MD5: d96e4a1a4c3676cd61c85f9bc430a398 SHA-1: 38d940dfcd17b346f3e4cb3bce6d6d68703be86d SHA-256: 05c60c496c1f896ec360adf0b19e2fd2175d7f5560246e629a897bd482bbb54e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which are structured to appear as book titles, suggesting an attempt at SEO manipulation or a link farm. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking links. While no scripts were explicitly extracted, the ML classifier and the link farm heuristic strongly indicate malicious intent, likely to redirect users to malicious content or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/5a07a02a08a02/The-Grace-in-Darkness-Darkness-Duet-2-by-Melissa-Andrea.pdf
    • http://muicuiu.dumb1.com/5a04a04a04a09/The-Edge-of-Darkness-Darkness-Duet-1-by-Melissa-Andrea.pdf
    • http://muicuiu.dumb1.com/6a03a02a04a02/Hearts-of-Darkness-by-Andrea-Speed.pdf
    • http://muicuiu.dumb1.com/3a05a00a01a06a02/Enlightened-by-Darkness---Vol-3-As-Darkness-Spreads-Enlightened-By-Darkness-3-by-Robert-Friedrich.pdf
    • http://muicuiu.dumb1.com/1a03a02a07a07a06/Darkness-of-Light-Darkness-1-by-Stacey-Marie-Brown.pdf
    • http://muicuiu.dumb1.com/1a08a01a08a01a05/Redeemed-in-Darkness-Paladins-of-Darkness-4-by-Alexis-Morgan.pdf
    • http://muicuiu.dumb1.com/4a05a04a03a08a09/Darkness-Darkness-Charlie-Resnick-12-by-John-Harvey.pdf
    • http://muicuiu.dumb1.com/1a03a04a01a04a03/Fire-in-the-Darkness-Darkness-2-by-Stacey-Marie-Brown.pdf
    • http://muicuiu.dumb1.com/2a05a07a07a07a07/Beast-in-the-Darkness-Darkness-2-5-by-Stacey-Marie-Brown.pdf
    • http://muicuiu.dumb1.com/4a03a07a01a09/Scent-of-Darkness-Darkness-Chosen-1-by-Christina-Dodd.pdf
    • http://muicuiu.dumb1.com/4a03a04a07a04a07/Eternal-Darkness-Cursed-in-Darkness-1-by-Natalie-Hancock.pdf
    • http://muicuiu.dumb1.com/3a05a01a02a02a08/Ascending-Darkness-Shattering-the-Darkness-2-by-Jessica-Spoon.pdf
    • http://muicuiu.dumb1.com/1a02a00a00a04a08/Emerald-Darkness-Beautiful-Darkness-1-by-Sarra-Cannon.pdf
    • http://muicuiu.dumb1.com/5a07a00a03a00a03/Scent-of-Darkness-Darkness-Chosen-1-by-Christina-Dodd.pdf
    • http://muicuiu.dumb1.com/4a03a04a09a04a09/Ascend-from-Darkness-Cursed-in-Darkness-5-by-Natalie-Hancock.pdf
    • http://muicuiu.dumb1.com/3a07a03a06a08a07/Taste-of-Darkness-Darkness-2-by-Katie-Reus.pdf
    • http://muicuiu.dumb1.com/4a01a01a03a00a02/A-Light-in-the-Darkness-In-Darkness-2-by-Alice-Winters.pdf
    • http://muicuiu.dumb1.com/7a05a02a07a01/Into-the-Darkness-Darkness-Falls-1-by-Kira-Adams.pdf
    • http://muicuiu.dumb1.com/4a08a04a06a09a02/Darkness-Awakened-Darkness-1-by-Katie-Reus.pdf
    • http://muicuiu.dumb1.com/7a00a05a07a08/Into-the-Darkness-Darkness-Falls-1-by-Kira-Adams.pdf

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