Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d57236a86beeefe…

MALICIOUS

PDF

14.4 KB Created: 2019-11-04 00:18:18 +00:00 Authoring application: mPDF 5.7
MD5: 497d8ee69f02ced8e8ce5614b1b3a673 SHA-1: cd0259247aab77e3d4331bf0f378520cf5c212cd SHA-256: 5d57236a86beeefe813a889f10f9f4d0805a5f48baa0c8b4ba52952a3a0f88ce
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. While the ML classifier flagged this as malicious, the specific intent of the links is unclear as they point to benign-looking book titles. No scripts were extracted, but the PDF structure and embedded links suggest an attempt to redirect the user to potentially harmful content.

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/3739734736735734/Crazy-for-the-Competition-Hope-Springs-2-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/3734737738738733/Demons-of-the-Sun-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/6736738735737739/Cendrillon-me-perdra-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/1737737730737739/All-the-Broken-Pieces-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/4735735737739/Cinderella-Screwed-Me-Over-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/2738732735737730/Anatomy-of-a-Player-Taking-Shots-2-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/1739730736736735/Anatomy-of-a-Player-Taking-Shots-2-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/9738739732736733/Sie-d-rfen-die-Braut-jetzt-verlassen-Roman-by-Cindi-Madsen.pdf
    • http://cefasfese.4pu.com/9735730731739736/Hope-Springs-Hope-Springs-2-by-Lynne-Hinton.pdf
    • http://cefasfese.4pu.com/4739731730737735/Drive-Me-Crazy-Holland-Springs-1-by-Marquita-Valentine.pdf
    • http://cefasfese.4pu.com/9735730731735734/Forever-Friends-Hope-Springs-3-by-Lynne-Hinton.pdf
    • http://cefasfese.4pu.com/1731735731733/The-Second-Chance-Cafe-Hope-Springs-1-by-Alison-Kent.pdf
    • http://cefasfese.4pu.com/2734739738737738/Hope-Springs-Longing-for-Home-2-by-Sarah-M-Eden.pdf
    • http://cefasfese.4pu.com/2738733730731735/Crazy-Horny-Lady-Crazy-Sexy-Love-Stories-Book-1-by-Lindsay-Valentine.pdf
    • http://cefasfese.4pu.com/2732735735735736/Kissing-Her-Crazy-Crazy-Love-2-by-Kira-Archer.pdf
    • http://cefasfese.4pu.com/1732739732737735/A-Crazy-Homecoming-Crazy-Texas-1-by-Cate-Baylor.pdf
    • http://cefasfese.4pu.com/1731738737731730739/The-Secrets-of-Mystic-Springs-Mystic-Springs-2-by-Mona-Marple.pdf
    • http://cefasfese.4pu.com/8733730736732739/No-Regrets-by-Cindi-Myers.pdf
    • http://cefasfese.4pu.com/5731737734730734/What-Phoebe-Wants-Harlequin-Flipside-20-by-Cindi-Myers.pdf
    • http://cefasfese.4pu.com/3739731/You-Can-Make-Anything-Sad-by-Spencer-Madsen.pdf

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