Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ef63e3148fd9f4…

MALICIOUS

PDF

13.0 KB Created: 2020-03-18 18:08:58 +00:00 Authoring application: mPDF 5.7
MD5: 39ea47f3efd34136c02a858e1ee77c41 SHA-1: 34d7b8792b6bf0a36f732a5670185a3463b26006 SHA-256: 35ef63e3148fd9f494bfb37abe95de47899521f3472e1bb42dd20eabd7f83bee
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to external PDF documents on the domain 'weisncio.myhome.cx'. This behavior is indicative of a link farm or a redirection scheme designed to lead users to potentially 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 0.9006

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://weisncio.myhome.cx/5629622626625621/Treasure-Island---Special-Student-Edition-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/2620629620622620/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/5627624621628629/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/5627625621629626/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/3624620623624620/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/8620621625624627/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/8620623628620622/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/7621626628625628/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/6621620621627623/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/7620622629625622/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/6629629620624620/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/1621622625620621623/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/9620629623624624/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/6625621623627629/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/2627622625627626/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/7629626620629621/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/9621622629626629/Treasure-Island-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/9620623629622626/Treasure-island-An-Audible-Orignal-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/9625629621623626/Treasure-Island-Heinle-Reading-Library-by-Robert-Louis-Stevenson.pdf
    • http://weisncio.myhome.cx/8620622629627625/Treasure-Island-Color-Illustrated-Formatted-for-E-Readers-by-Robert-Louis-Stevenson.pdf

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