Malicious PDF — malware analysis report

Static analysis result for SHA-256 c869298b7e28ed04…

MALICIOUS

PDF

16.2 KB Created: 2019-05-02 17:02:22 +01:00 Authoring application: mPDF 5.7
MD5: da914b3f276cf1283e6849c1fd46db22 SHA-1: a24318827bae325b8c73fcd533a2b733cf6d2766 SHA-256: c869298b7e28ed04811a273b16e23de3d65ec6405d22e82061dfff7b44f4bfa4
90 Risk Score

Malware Insights

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

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

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/9738738739731735/Cam-Jansen-and-the-Mystery-of-the-Babe-Ruth-Baseball-Cam-Jansen-Mysteries-6-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/4735736730733736/Young-Cam-Jansen-and-the-Circus-Mystery-Young-Cam-Jansen-Mysteries-17-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/4735735737732730/The-Mystery-of-the-Circus-Clown-Cam-Jansen-Mysteries-7-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/2730738735733731/The-Mystery-of-the-Stolen-Diamonds-Cam-Jansen-Mysteries-1-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/4735732732731731/The-Mystery-of-the-Gold-Coins-Cam-Jansen-Mysteries-5-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/9738738739732730/The-Mystery-of-the-Monster-Movie-Cam-Jansen-Mysteries-8-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/1739734733734736/Cam-Jansen-and-the-Mystery-at-the-Haunted-House-13-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/9737735733735739/Theo-Jansen-The-Great-Pretender-by-Theo-Jansen.pdf
    • http://cefasfese.4pu.com/3739736739737733/Out-of-Here-by-Patty-Jansen.pdf
    • http://cefasfese.4pu.com/4738732732737731/Scorching-the-Ice-by-JB-Jansen.pdf
    • http://cefasfese.4pu.com/4732738739731739/Seeing-Red-Ambassador-1-by-Patty-Jansen.pdf
    • http://cefasfese.4pu.com/9730733734731736/Amaryllis-of-Hawaii-by-Marilyn-Jansen.pdf
    • http://cefasfese.4pu.com/1731733736739737732/In-Liebe-verzeihen-by-Ulrike-Jansen.pdf
    • http://cefasfese.4pu.com/8732737730732735/The-Weed-Eaters-by-Patty-Jansen.pdf
    • http://cefasfese.4pu.com/1735733731739731/This-Peaceful-State-of-War-by-Patty-Jansen.pdf
    • http://cefasfese.4pu.com/7730737735737/Over-a-Thousand-Hills-I-Walk-with-You-by-Hanna-Jansen.pdf
    • http://cefasfese.4pu.com/9735732734/Crash-Landing-The-Long-Road-Home-by-Liz-Jansen.pdf
    • http://cefasfese.4pu.com/1731732738730736734/Schnittpunkt-Berlin-Kriminalgeschichten-aus-der-Hauptstadt-by-Patricia-Jansen.pdf
    • http://cefasfese.4pu.com/9730734738737731/Percy-s-Plan-Berkshires-Journal-Series-1-by-Paul-Jansen.pdf
    • http://cefasfese.4pu.com/9738735733730737/The-Mystery-of-the-Stolen-Corn-Popper-by-David-A-Adler.pdf
    • http://cefasfese.4pu.com/9737735

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