Malicious PDF — malware analysis report

Static analysis result for SHA-256 8129f8bd2c8cb50a…

MALICIOUS

PDF

14.9 KB Created: 2019-06-04 19:18:32 +01:00 Authoring application: mPDF 5.7
MD5: bddf70a6b17cfc487824605ed3956404 SHA-1: 183606e7a47eed392bfc1c2485ed033f5262fc99 SHA-256: 8129f8bd2c8cb50a41b14a7e30e89153b0c9f2f4e5fcbafdd3a04f6610f1a474
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded URLs, identified as a PDF_SEO_LINK_FARM heuristic. While the URLs themselves are currently classified as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO poisoning or to redirect users to malicious sites. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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://cefasfese.4pu.com/2736738735738735/Vegas-Heat-Vegas-2-by-Fern-Michaels.pdf
    • http://cefasfese.4pu.com/4730737732733736/I-Do-in-Las-Vegas-Memories-and-Experiences-of-a-Las-Vegas-Wedding-Chapel-Minister-by-Bishop-Michelina-Foster.pdf
    • http://cefasfese.4pu.com/2730739735736734/My-Fake-Vegas-Boyfriend-Viva-Las-Vegas-1-by-Lori-Sizemore.pdf
    • http://cefasfese.4pu.com/1730739739735731730/Las-Vegas-Legends-What-Happened-in-Vegas-by-Greg-Niemann.pdf
    • http://cefasfese.4pu.com/1737732733732731/Nothing-Stays-In-Vegas-Vegas-1-by-Elena-Aitken.pdf
    • http://cefasfese.4pu.com/3733730739737739/What-Happens-in-Vegas-by-Robert-S-Wilson.pdf
    • http://cefasfese.4pu.com/5733731738731738/Smile-you-re-in-Vegas-by-Duo-Infernale.pdf
    • http://cefasfese.4pu.com/3735731732733733/Only-In-Vegas-by-Lindsey-Brookes.pdf
    • http://cefasfese.4pu.com/3730733736739733/Still-Life-Las-Vegas-by-James-Sie.pdf
    • http://cefasfese.4pu.com/5730731730737732/Vegas-Ramblings-by-Robert-E-Wacaster.pdf
    • http://cefasfese.4pu.com/1731737731730738733/Heiraten-in-Las-Vegas-by-Michael-Baldershausen.pdf
    • http://cefasfese.4pu.com/9738732735737731/To-Vegas-and-Back-by-Suzanne-R-Krauss.pdf
    • http://cefasfese.4pu.com/1732739737737731/Lost-Vegas-by-Steve-Brewer.pdf
    • http://cefasfese.4pu.com/2734739735736737/What-Happens-in-Vegas-Rx-for-Pleasure-2-by-Marteeka-Karland.pdf
    • http://cefasfese.4pu.com/3733733738735734/A-DEAD-END-IN-VEGAS-by-Irene-Woodbury.pdf
    • http://cefasfese.4pu.com/1736736736731735/Masquerading-with-the-CEO-What-Happens-in-Vegas-4-by-Dawn-Chartier.pdf
    • http://cefasfese.4pu.com/2732737733739739/Waking-Up-in-Vegas-by-Gabrielle-Dorian.pdf
    • http://cefasfese.4pu.com/4733738733736734/Partners-Vegas-1-by-Mimi-Barbour.pdf
    • http://cefasfese.4pu.com/6735739739731/Leaving-Las-Vegas-by-John-O-39-Brien.pdf
    • http://cefasfese.4pu.com/9737734731735731/Elvis-in-Vegas-by-Paul-Lichter.pdf
    • http://cefasfese.4pu.com/1731737731730738733/Heiraten-in-Las-Vegas-by-Michael-Baldershausen

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