Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd365aa3e5e3c788…

MALICIOUS

PDF

22.2 KB Created: 2020-02-05 10:31:05 +00:00 Authoring application: mPDF 5.7
MD5: de02f3a7c4d752e7f4e5681e545c77d7 SHA-1: f858324ed08b7bcbed44f730f1ae92b96d463699 SHA-256: fd365aa3e5e3c78821f83cc5afdfa083f84274aad4fb7cf378c7abcef188973b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs, forming a link farm. The primary heuristic indicates this is a "PDF_SEO_LINK_FARM" designed to drive traffic to external PDF documents. The ML classifier also flagged the document as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, making it difficult to determine the exact user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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/9627629627623625/Die-drei-Musketiere-Gesamtausgabe-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/9623627624629624/Der-Graf-von-Monte-Christo-Gesamtausgabe-in-6-B-nden-Abenteuer-Klassiker-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/7625629625623623/Der-Graf-von-Monte-Christo---Ungek-rzte-Gesamtausgabe-Zweisprachige-illustrierte-Gold-Edition-Deutsch-Englisch-26-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/6623623627625627/The-Man-In-The-Iron-Mask-By-Alexandre-Dumas-p-re-Illustrated-amp-Unabridged-Free-Bonus-Audiobook-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/5625626627620620/Le-Comte-de-Monte-Cristo-oeuvre-complete-annot-e-par-Alexandre-Dumas-p-re-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/6623623627622629/The-Count-of-Monte-Cristo-Inti-Classics-Annotated-by-Alexandre-Dumas-p-re-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/7623622625620626/La-Dame-de-Monsoreau---Tome-1-amp-2-amp-3---Alexandre-Dumas---Roman-historique---annot-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/8620629629624623/Les-trois-mousquetaires-le-vicomte-de-Bragelonne-complet-et-annot-Alexandre-Dumas-t-3-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/6623626623622624/The-Works-of-Alexandre-Dumas-the-Vicomte-de-Bragelonne-Part-One-Volume-3-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/1621627626624620628/The-Works-of-Alexandre-Dumas-Vol-2-of-30-The-Count-Of-Monte-Cristo-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/1620629628620625627/The-Count-of-Monte-Cristo-By-Alexandre-Dumas---Rank-30-Of-100-100-Formatted-Wordwise-Enabled-Active-TOC-Active-Footnotes-Illustrated--JKL-Classics-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/8625622628627628/Murat-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/4623629624624621/The-Three-Musketeers-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/9627625622627628/The-Three-Musketeers-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/5625621624622629/The-Three-Musketeers-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/5626623623628629/The-Three-Musketeers-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/5625620620625620/The-Three-Musketeers-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/5624627624626621/The-Cenci-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/9627620622620627/Die-Bartholom-usnacht-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/2624620625620623/The-Three-Musketeers-by-Alexandre-Dumas.pdf
    • http://weisncio.myhome.cx/5625626627620620/Le-Comte-de-Monte-Cristo-oeuvr

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