Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e901cc9f12acad…

MALICIOUS

PDF

15.3 KB Created: 2019-05-02 05:08:47 +01:00 Authoring application: mPDF 5.7
MD5: eb7c340a2c15e849876ddb463fbe70ba SHA-1: 12a711bd88559df9bba3b0995aa4e8705bf4bfd2 SHA-256: 77e901cc9f12acad2e26ec12206dedd330fe1448329cb4a706e9a16a525ddfc2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified as a link farm, which are likely intended to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the structure and heuristics suggest an attempt to exploit user interaction via these links, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/3738739730730733/The-Rule-Book-The-Rule-Breakers-1-by-Jennifer-Blackwood.pdf
    • http://cefasfese.4pu.com/3731733739737731/The-Rule-Maker-The-Rule-Breakers-2-by-Jennifer-Blackwood.pdf
    • http://cefasfese.4pu.com/4736736735736733/Risk-It-Rule-Breakers-4-by-Jennifer-Chance.pdf
    • http://cefasfese.4pu.com/6737739734739737/Gamestorming-A-Playbook-for-Innovators-Rule-breakers-and-Changemakers-by-Dave-Gray.pdf
    • http://cefasfese.4pu.com/4732738738738733/Twenty-one-Year-rule-The-Rule-3-by-Alaina-Stanford.pdf
    • http://cefasfese.4pu.com/4735735739736730/Rule-s-Property-The-House-of-Rule-2-by-Lynda-Chance.pdf
    • http://cefasfese.4pu.com/1737731734737731/Rule-s-Obsession-The-House-of-Rule-1-by-Lynda-Chance.pdf
    • http://cefasfese.4pu.com/4731734737731731/Vampires-Rule-Rule-1-by-K-C-Blake.pdf
    • http://cefasfese.4pu.com/1737736733739739/The-Zombie-Rule-Book-by-Tony-Newton.pdf
    • http://cefasfese.4pu.com/5730738736738/The-Zombie-Rule-Book-A-Zombie-Apocalypse-Survival-Guide-by-Tony-Newton.pdf
    • http://cefasfese.4pu.com/6736734730739736/The-Runner-s-Rule-Book-Everything-a-Runner-Needs-to-Know---And-Then-Some-by-Mark-Remy.pdf
    • http://cefasfese.4pu.com/1737731735737/Everything-She-Ever-Wanted-by-Ann-Rule.pdf
    • http://cefasfese.4pu.com/4730739732733737/The-Stranger-Beside-Me-by-Ann-Rule.pdf
    • http://cefasfese.4pu.com/4735736732731/Possession-by-Ann-Rule.pdf
    • http://cefasfese.4pu.com/6731739731731731/Rule-and-Diplomacy-by-Kaleb.pdf
    • http://cefasfese.4pu.com/1737735731737739/The-Hidden-Twin-by-Adi-Rule.pdf
    • http://cefasfese.4pu.com/3739734731736738/I-Rule-World-by-Ruthz-S-B-.pdf
    • http://cefasfese.4pu.com/1731733733730731/Her-Rule-Would-Always-Last-by-Seth-Chambers.pdf
    • http://cefasfese.4pu.com/3739731737736736/I-Rule-World-by-Ruthz-S-B-.pdf
    • http://cefasfese.4pu.com/1739737731737738/Rule-1-Don-t-Be-2-by-Daniel-Milstein.pdf

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