Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d0c5e8113c367b…

MALICIOUS

PDF

15.6 KB Created: 2019-04-30 02:02:18 +01:00 Authoring application: mPDF 5.7
MD5: c5f1b5e2c04427fd8745b7c7e5d59412 SHA-1: 895a3dcc005abfbd0d1ab91fa75988d2725b6285 SHA-256: b5d0c5e8113c367b3c18bdffec82901ad81e3ac950e79803a1702ed1bdf894eb
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, indicating a link farm or distribution mechanism. While the document body is heavily obfuscated, the presence of numerous links suggests a phishing or malicious content delivery attempt. The ML classifier strongly flagged this PDF as malicious, supporting the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

Heuristics 2

  • 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.
  • 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/2a06a07a05a08a04/Sacrificed-True-Alpha-5-by-Alisa-Woods.pdf
    • http://muicuiu.dumb1.com/6a00a02a06a01/Desired-True-Alpha-1-by-Alisa-Woods.pdf
    • http://muicuiu.dumb1.com/2a06a07a05a08a02/Hunted-True-Alpha-3-by-Alisa-Woods.pdf
    • http://muicuiu.dumb1.com/4a00a04a08a09a09/Touched-by-a-Dragon-Fallen-Immortals-6-by-Alisa-Woods.pdf
    • http://muicuiu.dumb1.com/1a08a04a05a04a08/Kiss-of-a-Dragon-Fallen-Immortals-1-by-Alisa-Woods.pdf
    • http://muicuiu.dumb1.com/4a00a04a09a00a03/Heart-of-a-Dragon-Fallen-Immortals-2-by-Alisa-Woods.pdf
    • http://muicuiu.dumb1.com/4a09a07a03a02a02/Kiss-of-a-Dragon-Fallen-Immortals-1-by-Alisa-Woods.pdf
    • http://muicuiu.dumb1.com/5a01a05a08a02/True-Women-by-Janice-Woods-Windle.pdf
    • http://muicuiu.dumb1.com/1a01a01a08a06a00a01/Ladylust-4-Alpha-Males-The-Big-Bundle-of-Hetero-Erotica-About-Macho-Alpha-Studs-Alpha-Male-Hetero-Big-Bundles-Book-6-by-B-R-Eastman.pdf
    • http://muicuiu.dumb1.com/2a07a00a06a05a09/Sacrificed-by-Nykki-Mills.pdf
    • http://muicuiu.dumb1.com/1a07a03a07a07a03/Sacrificed-Little-Boy-Lost-6-by-J-P-Barnaby.pdf
    • http://muicuiu.dumb1.com/1a07a09a09a08a01/Sacrificed-Ignited-2-by-Desni-Dantone.pdf
    • http://muicuiu.dumb1.com/5a02a09a04a07/Sacrificed-Ariya-Adams-Trilogy-3-by-Anna-Applegate.pdf
    • http://muicuiu.dumb1.com/3a02a06a03a01a02/The-Alpha-s-Virgin-Possession-The-Alpha-Shifter-Collection-3-by-Sam-Crescent.pdf
    • http://muicuiu.dumb1.com/4a09a01a07a01a05/Alpha-Wolf-Alpha-Force-2-by-Linda-O-Johnston.pdf
    • http://muicuiu.dumb1.com/9a06a02a06a00a09/Alpha-s-War-Bad-Boy-Alphas-7-Bad-Alpha-Dads-by-Renee-Rose.pdf
    • http://muicuiu.dumb1.com/4a02a04a02a02a01/Alpha-Series-Alpha-Malik-by-Midika-Crane.pdf
    • http://muicuiu.dumb1.com/1a03a05a05a00a00/Alpha-Unleashed-Alpha-Girl-5-by-Aileen-Erin.pdf
    • http://muicuiu.dumb1.com/1a01a07a01a00a08/Avoiding-Alpha-Alpha-Girl-2-by-Aileen-Erin.pdf
    • http://muicuiu.dumb1.com/9a06a02a08a01a00/The-Alpha-s-Punishment-The-Alpha-Doms-1-5-by-Renee-Rose.pdf

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