Malicious PDF — malware analysis report

Static analysis result for SHA-256 011746fe395ad53a…

MALICIOUS

PDF

20.3 KB Created: 2019-04-30 05:32:26 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-13
MD5: f2e87757dd456d8d077cf5a1658d1c76 SHA-1: 74f786d5f57b35c94cea800da702874bf31b7963 SHA-256: 011746fe395ad53ae36031433db8304106567f897aad4809e8c6c04b1911a7de
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests an attempt to manipulate search engine results or redirect users to potentially malicious content. While the document body is heavily corrupted, the presence of these links and the ML classifier's high confidence score indicate a malicious intent. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9809

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://muicuiu.dumb1.com/1a09a05a02a05a03/The-Reluctant-Mr-Darwin-An-Intimate-Portrait-of-Charles-Darwin-and-the-Making-of-His-Theory-of-Evolution-by-David-Quammen.pdf In PDF document text
    • http://muicuiu.dumb1.com/9a08a02a04a01a03/On-Evolution-The-Development-of-the-Theory-of-Natural-Selection-by-Charles-Darwin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a09a00a04a04a01/The-Darwin-Myth-The-Life-and-Lies-Charles-Darwin-by-Benjamin-Wiker.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a02a05a08a05a07/Darwin-s-Armada-Four-Voyages-and-the-Battle-for-the-Theory-of-Evolution-by-Iain-McCalman.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a09a00a03a07a09/The-Darwin-Awards-Next-Evolution-Chlorinating-the-Gene-Pool-Darwin-Awards-5-by-Wendy-Northcutt.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a03a09a08a09a03/The-Darwin-Awards-Evolution-in-Action-Darwin-Awards-1-by-Wendy-Northcutt.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a01a08a00a08a05/Discoveries-Darwin-and-the-Science-of-Evolution-by-Patrick-Tort.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a07a02a03a05/Darwin-s-Ghosts-The-Secret-History-of-Evolution-by-Rebecca-Stott.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a05a02a05a05/Life-In-Darwin-s-Universe-Evolution-And-The-Cosmos-by-Gene-Bylinsky.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a09a04a02a08a02/Darwin-and-Evolution-for-Kids-His-Life-and-Ideas-with-21-Activities-by-Kristan-Lawson.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a08a04a08a05/The-Darwin-Awards-III-Survival-of-the-Fittest-Darwin-Awards-3-by-Wendy-Northcutt.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a09a00a03a08a01/The-Darwin-Awards-4-Intelligent-Design-Darwin-Awards-4-by-Wendy-Northcutt.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a09a00a04a07a09/Charles-Darwin-by-Adrian-J-Desmond.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a04a09a04a05/Voyage-of-the-Beagle-by-Charles-Darwin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a03a08a09a04a08/On-the-Origin-of-Species-by-Charles-Darwin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a09a07a01a01a04/The-Origin-Of-Species-by-Charles-Darwin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a09a02a07a01/Galapagos-at-the-Crossroads-Pirates-Biologists-Tourists-and-Creationists-Battle-for-Darwin-s-Cradle-of-Evolution-by-Carol-Ann-Bassett.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a00a01a00a05a02/The-Tree-of-Life-Charles-Darwin-by-Peter-S-s.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a04a09a08a04a06/Charles-Darwin-Voyaging-by-Janet-Browne.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a08a00a09a00a03/Par-Izcelsmes-Sugas-On-the-Origin-of-Species-by-Charles-Darwin.pdfIn PDF document text

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