Malicious PDF — malware analysis report

Static analysis result for SHA-256 71197d5ebf166119…

MALICIOUS

PDF

25.4 KB Created: 2019-04-30 02:53:38 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-04
MD5: 3aec9239d949bdfa81d502b41eace64b SHA-1: 89cc7ae5c8705bc65f1571f383d1e534b12d110c SHA-256: 71197d5ebf166119d27e1516de36f024c014b4070b7060795f82275e9c1c16f6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/4a08a06a05a06a04/Unexplained-Strange-Sightings-Incredible-Occurrences-amp-Puzzling-Physical-Phenomena-by-Jerome-Clark.pdf In PDF document text
    • http://muicuiu.dumb1.com/3a01a08a09a09a00/Incredible-Manatees-Fun-Animal-Ebooks-for-Adults-amp-Kids-7-and-Up-With-Facts-amp-Incredible-Photos-Exploring-Our-Incredible-World-Series-by-Mark-Smith.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a07a09a01a06/Etidorhpa-Strange-History-of-a-Mysterious-Being-and-an-Incredible-Journey-Inside-the-Earth-by-John-Uri-Lloyd.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a06a09a00a04a06/Humorous-World-of-Jerome-K-Jerome-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a06a09a00a04a01/Jerome-K-Jerome-Collected-Works-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a09a05a09a00/The-Puzzling-World-of-Winston-Breen-The-Puzzling-World-of-Winston-Breen-1-by-Eric-Berlin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a09a07a00a07a08/Horten-s-Incredible-Illusions-Magic-Mystery-amp-Another-Very-Strange-Adventure-Horten-s-Miraculous-Mechanisms-2-by-Lissa-Evans.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a03a00a09a06a05/Drei-Mann-in-einem-Boot-vom-Hunde-ganz-zu-schweigen-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a06a05a04a03a06/Drei-Mann-in-einem-Boot-Ganz-zu-schweigen-vom-Hund-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a00a01a05a06a08/Three-Men-in-a-Boat-To-Say-Nothing-of-the-Dog-New-Illustrated-Edition-with-67-Original-Drawings-by-A-Frederics-a-Detailed-Map-of-Tour-and-a-Photo-of-the-Three-Men-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a05a04a01a04a05/Tres-hombres-en-una-barca-por-no-mencionar-al-perro-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a03a02a04a04a04/The-Soul-of-Nicholas-Snyders-Or-the-Miser-of-Zandam-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a02a07a00a05a00/Trois-hommes-dans-un-bateau-Annot-Livre-bilingue-Apprendre-l-anglais-en-lisant-Book-18-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a02a08a08a00a01/Trois-Hommes-Dans-Un-Bateau-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a02a06a06a05a00/Three-Men-in-a-Boat-To-Say-Nothing-of-the-Dog-Illustrated-1889-edition-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a02a09a05a03a04/Trois-hommes-dans-un-bateau-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a06a09a00a03a00/Second-Thoughts-Of-An-Idle-Fellow-by-Jerome-K-Jerome.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a05a06a06a00a09/The-Diamond-Conspiracy-Ministry-of-Peculiar-Occurrences-4-by-Pip-Ballantine.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a04a05a08a01a00/Deep-Sightings-and-Rescue-Missions-Fiction-Essays-and-Conversations-by-Toni-Cade-Bambara.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a09a00a00a06a03/A-Ministry-of-Peculiar-Occurrences-Tales-from-the-Archives-Volume-6-by-Kreg-Steppe.pdfIn PDF document text

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