Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea1c870615cbf54…

MALICIOUS

PDF

17.5 KB Created: 2019-05-07 04:02:23 +01:00 Authoring application: mPDF 5.7
MD5: fbc7f545b0d4742d3fd09898172f776f SHA-1: 0308959cc483e251633595413853e196f81c5361 SHA-256: 7ea1c870615cbf54dfc98cb807d6a07de43aa8ab58627b21585c3c0409a3c449
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, which are likely intended to redirect users to malicious content. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs suggests an attempt to trick users into downloading further payloads. No scripts were extracted from this sample, but the structure and URL distribution are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/5a03a00a09a03/The-Catcher-in-the-Rye-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/1a01a01a05a07a05a09/The-Catcher-in-the-Rye-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/6a05a00a00a05/The-Catcher-in-the-Rye-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/3a03a02a09a01a07/The-Catcher-in-the-Rye-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/4a02a09a03a01a03/The-Catcher-in-the-Rye-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/1a01a08a02a00a02a06/The-Catcher-in-the-Rye-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/7a05a01a03a04a06/The-Catcher-in-the-Rye-All-In-One-Edition-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/5a05a00a05a02a00/The-Catcher-in-the-Rye---by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/9a03a05a07a07a07/The-Catcher-in-the-Rye-and-JD-Salinger-by-Andrew-Hastings.pdf
    • http://muicuiu.dumb1.com/9a03a05a08a03a03/The-Catcher-in-the-Rye-by-J-D-Salinger-Summary-amp-Study-Guide-by-BookRags.pdf
    • http://muicuiu.dumb1.com/9a03a05a08a09a00/Works-by-J-D-Salinger-Study-Guide-Novels-by-J-D-Salinger-Short-Stories-by-J-D-Salinger-Short-Story-Collections-by-J-D-Salinger-by-Books-LLC.pdf
    • http://muicuiu.dumb1.com/3a04a04a02a09a03/The-Catcher-in-the-Rye-Enigma-J-D-Salinger-s-Mind-Control-Triggering-Device-or-a-Coincidental-Literary-Obsession-of-Criminals-The-Underground-Knowledge-Series-4-by-James-Morcan.pdf
    • http://muicuiu.dumb1.com/2a04a04a00a09a03/The-Lightning-Catcher-The-Lightning-Catcher-1-by-Anne-Cameron.pdf
    • http://muicuiu.dumb1.com/2a00a05a00a09a06/Nine-Stories-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/3a02a06a01a01a05/Down-at-the-Dinghy-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/9a03a05a09a03a04/Sacrilege-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/9a03a05a09a01a07/With-Kennedy-by-Pierre-Salinger.pdf
    • http://muicuiu.dumb1.com/6a04a06a03a08a01/This-Sandwich-Has-No-Mayonnaise-by-J-D-Salinger.pdf
    • http://muicuiu.dumb1.com/9a03a05a08a02a00/J-D-Salinger-by-Michael-A-Sommers.pdf
    • http://muicuiu.dumb1.com/9a03a05a09a01a08/J-D-Salinger-by-James-Lundquist.pdf

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