Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e28b0d537ebe31…

MALICIOUS

PDF

16.1 KB Created: 2019-11-10 01:57:12 +00:00 Authoring application: mPDF 5.7
MD5: f78195903582bfeea535c8a629147951 SHA-1: 19c370b6c26c511f96eca574fc61d8bf471c3009 SHA-256: 68e28b0d537ebe31b98d96af0ab4e77d362c1ec28d1612df4dea976d87b27f66
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the sheer volume and structure suggest an attempt to manipulate search engine results or distribute potentially harmful content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/1734732730732734/Staying-Dead-Retrievers-1-by-Laura-Anne-Gilman.pdf
    • http://cefasfese.4pu.com/1734732733733739/Blood-from-Stone-Retrievers-6-by-Laura-Anne-Gilman.pdf
    • http://cefasfese.4pu.com/6732735737732730/Dragon-Virus-by-Laura-Anne-Gilman.pdf
    • http://cefasfese.4pu.com/2736733737737734/The-Cold-Eye-The-Devil-s-West-2-by-Laura-Anne-Gilman.pdf
    • http://cefasfese.4pu.com/8738734739735732/Morgain-s-Revenge-Grail-Quest-2-by-Laura-Anne-Gilman.pdf
    • http://cefasfese.4pu.com/2738734736733734/Dragon-Justice-Paranormal-Scene-Investigations-4-by-Laura-Anne-Gilman.pdf
    • http://cefasfese.4pu.com/1736733739737738/Dragon-Justice-Paranormal-Scene-Investigations-4-by-Laura-Anne-Gilman.pdf
    • http://cefasfese.4pu.com/9733735736730733/The-Art-of-Staying-Dead-by-Joel-Hames.pdf
    • http://cefasfese.4pu.com/1731734738736732737/The-Journal-Writer-s-Guide-to-Staying-Started-A-Companion-Workbook-to-the-Getting-Started-Staying-Started-Journaling-Workshop-by-Nathan-Ohren.pdf
    • http://cefasfese.4pu.com/4738739737730731/What-the-Dead-Know-by-Laura-Lippman.pdf
    • http://cefasfese.4pu.com/1737737733738734/Play-Dead-by-Anne-Frasier.pdf
    • http://cefasfese.4pu.com/7730733732735/Dead-and-Buried-The-Murder-Notebooks-4-by-Anne-Cassidy.pdf
    • http://cefasfese.4pu.com/3730735735736737/Play-Dead-Elise-Sandburg-1-by-Anne-Frasier.pdf
    • http://cefasfese.4pu.com/5733736738735730/Stay-Dead-Elise-Sandburg-2-by-Anne-Frasier.pdf
    • http://cefasfese.4pu.com/2737738739736737/Dead-Time-The-Murder-Notebooks-1-by-Anne-Cassidy.pdf
    • http://cefasfese.4pu.com/8735737738735739/Anne-of-Windy-Poplars-Anne-s-House-of-Dreams-Anne-of-Ingleside-Anne-of-Green-Gables-4-6-by-L-M-Montgomery.pdf
    • http://cefasfese.4pu.com/5739733739733/Dead-Girls-Dead-Boys-Dead-Things-by-Richard-Calder.pdf
    • http://cefasfese.4pu.com/1733738733734732/Staying-On-by-Paul-Scott.pdf
    • http://cefasfese.4pu.com/3735734735731/Staying-On-by-Paul-Scott.pdf
    • http://cefasfese.4pu.com/5736739735730732/Staying-Together-Main-Street-10-by-Ann-M-Martin.pdf

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