Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd62b767ada4b30…

MALICIOUS

PDF

16.6 KB Created: 2019-05-03 16:10:22 +01:00 Authoring application: mPDF 5.7
MD5: f6dae8bf436825a81048c0d6e1b014ba SHA-1: be68afe109ca8577103f2c0c0b62d9092e318f97 SHA-256: efd62b767ada4b30570902a588d82be440616c7fb451b6acd416b2a01e1616f7
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded URLs, as indicated by the PDF_SEO_LINK_FARM heuristic. These URLs point to various book titles, suggesting a potential SEO poisoning or traffic generation scheme. While the ML classifier flagged the PDF as malicious, the specific intent beyond linking to external sites is unclear due to the lack of executable content or clear malicious scripts. The primary IOC is the dominant host found in the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9810

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/3730737735/Lost-Among-the-Living-by-Simone-St-James.pdf
    • http://cefasfese.4pu.com/3733738736734739/Lost-Among-the-Living-by-Simone-St-James.pdf
    • http://cefasfese.4pu.com/1735730736739/The-Living-and-the-Dead-Robert-McNamara-and-Five-Lives-of-a-Lost-War-by-Paul-Hendrickson.pdf
    • http://cefasfese.4pu.com/1730736737738737739/Simone-Weil-A-Life-by-Simone-P-trement.pdf
    • http://cefasfese.4pu.com/4733735737731736/Every-Living-Thing-by-James-Herriot.pdf
    • http://cefasfese.4pu.com/6734737731738732/Life-Grid-Wisdom-from-Above-for-Living-Here-Below-by-James-Poitras.pdf
    • http://cefasfese.4pu.com/1737732732734731/Octopussy-amp-the-Living-Daylights-James-Bond-14-by-Ian-Fleming.pdf
    • http://cefasfese.4pu.com/2737735731731735/The-Celestine-Vision-Living-the-New-Spiritual-Awareness-by-James-Redfield.pdf
    • http://cefasfese.4pu.com/4739738731733730/A-Better-Ten-Commandments-A-Guide-to-Living-Life-With-and-on-Purpose-by-James-Miller.pdf
    • http://cefasfese.4pu.com/6736734732732731/The-Ages-of-Gaia-A-Biography-of-Our-Living-Earth-by-James-E-Lovelock.pdf
    • http://cefasfese.4pu.com/8736734731734732/Remembering-Jean-s-Greatest-Gift-Living-Happily-at-Home-with-Alzheimer-s-by-James-Murr.pdf
    • http://cefasfese.4pu.com/2737735735735738/My-Lost-Mexico-by-James-A-Michener.pdf
    • http://cefasfese.4pu.com/2735737734736738/Lost-property-by-James-Moloney.pdf
    • http://cefasfese.4pu.com/3739739731735737/The-Lost-Continent-of-Mu-by-James-Churchward.pdf
    • http://cefasfese.4pu.com/1736735738737733/Lost-Horizon-by-James-Hilton.pdf
    • http://cefasfese.4pu.com/4732731736736736/Lost-Faith-to-Living-Faith-by-Ren-R-Royal.pdf
    • http://cefasfese.4pu.com/4733733730736738/The-Marquis-de-Sade-An-Essay-by-Simone-de-Beauvoir-by-Simone-de-Beauvoir.pdf
    • http://cefasfese.4pu.com/3732733735737738/The-Lost-Get-Back-Boogie-by-James-Lee-Burke.pdf
    • http://cefasfese.4pu.com/9738736738738/The-Lost-Prophet-Ramsey-2-by-James-B-McPike.pdf
    • http://cefasfese.4pu.com/1735737732736731/The-Lost-Property-Office-by-James-R-Hannibal.pdf
    • http://cefasfese.4pu.com/4739738731733730/A-Better-Ten-Commandments-A-Guide-to-Living-Life-With-and-on-Purpo

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