Malicious PDF — malware analysis report

Static analysis result for SHA-256 849a89062ce33aba…

MALICIOUS

PDF

13.0 KB Created: 2020-03-18 16:43:38 +00:00 Authoring application: mPDF 5.7
MD5: 381d178a5cb548518c0e258275286cb0 SHA-1: 82d00c2d02f09475385d63afd6874816e9bacdd9 SHA-256: 849a89062ce33aba9e3e335fcc256b2fd9781af667e6c6b665eb9f29f70e2630
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://calistazz.myhome.cx/2864860864861868/Sea-of-Poppies-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/4860869867866867/Countdown-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/2863860861860864/Sea-of-Poppies-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/1868864861864861/The-Glass-Palace-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/9864865/Flood-of-Fire-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/1860861862865863/River-of-Smoke-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/2860865862869864/The-Glass-Palace-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/7864865864861/The-Glass-Palace-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/1868862868866862/Sea-of-Poppies-Ibis-Trilogy-1-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/3865868866867/Sea-of-Poppies-Ibis-Trilogy-1-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/2862861860864862/River-of-Smoke-Ibis-Trilogy-2-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/3863869868860862/River-of-Smoke-Ibis-Trilogy-2-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/4869860866865860/Amitav-Ghosh-s-The-Shadow-Lines-by-Novy-Kapadia.pdf
    • http://calistazz.myhome.cx/3863869861861861/The-Calcutta-Chromosome-A-Novel-of-Fevers-Delirium-amp-Discovery-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/7865863861869/River-of-Smoke-Ibis-Trilogy-Book-2-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/3864861863865861/The-Great-Derangement-Climate-Change-and-the-Unthinkable-by-Amitav-Ghosh.pdf
    • http://calistazz.myhome.cx/3863865866861862/The-Hungry-The-Hungry-1-by-Steven-W-Booth.pdf
    • http://calistazz.myhome.cx/9862866863861867/Hungry-The-Hungry-Trilogy-1-by-A-S-Albrecht.pdf
    • http://calistazz.myhome.cx/1863868861863862/Raider-s-Tide-Raider-s-Tide-1-by-Maggie-Prince.pdf
    • http://calistazz.myhome.cx/5867866869862861/The-Tide-Watchers-The-Tide-Watchers-1-by-Lisa-Chaplin.pdf

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