Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a2782193d555af…

MALICIOUS

PDF

14.5 KB Created: 2019-11-28 22:38:50 +00:00 Authoring application: mPDF 5.7
MD5: 28ce64237ec6b530d0c45d70edae31ad SHA-1: b607139111d8a0e7ee257ce7e7e8ad86ca7544e9 SHA-256: c5a2782193d555af1821cd52e0b00e70ad069ce7448dfd0eec3339177c538659
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and embedded URLs suggest a lure to a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/6731733739739736/Daniel-Defoe-Five-Novels---Robinson-Crusoe-The-Further-Adventures-of-Robinson-Crusoe-Captain-Singleton-Moll-Flanders-A-Journal-of-the-Plague-Year-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/9737739737734732/Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/4731736734733733/Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/4737730734731738/Moll-Flanders-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/9736730737730738/Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/9739739731735732/Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/4738734731731734/Moll-Flanders-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/1730738738738737730/Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/3735739733732/Moll-Flanders-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/3731737734738739/Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/1733733738737738/A-Journal-of-the-Plague-Year-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/3737737731737732/A-Journal-of-the-Plague-Year-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/3739735731733733/A-Journal-of-the-Plague-Year-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/5732736735738731/The-Adventures-of-Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/6731733739730734/Serious-Reflections-of-Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/1730738733733732730/Robinson-Crusoe-Audiobook-On-Mp3-C-Ds-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/7730739736732739/The-Life-and-Adventures-of-Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/6731733738733733/Moll-Flanders-Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/6739733734737731/Life-and-Adventures-of-Robinson-Crusoe-by-Daniel-Defoe.pdf
    • http://cefasfese.4pu.com/5733732735735734/The-Life-and-Adventures-of-Robinson-Crusoe-by-Daniel-Defoe.pdf

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