Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e9c7c0d678c886…

MALICIOUS

PDF

17.9 KB Created: 2019-05-03 06:25:15 +01:00 Authoring application: mPDF 5.7
MD5: a208f6be606a8b4d2df49890dd6990df SHA-1: 90c907abf8f9bc4ab12c2c56f2a3c78d2d57684f SHA-256: e4e9c7c0d678c8864dc5e03615793a291ef89a112887850f9eef07ac11db3d88
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM'. While the document body is unreadable, the presence of numerous links suggests an attempt to redirect users to potentially harmful external content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/4a00a00a04a07a09/Secret-Song-Medieval-Song-4-by-Catherine-Coulter.pdf
    • http://muicuiu.dumb1.com/2a00a00a09a02a01/Warrior-s-Song-Medieval-Song-1-by-Catherine-Coulter.pdf
    • http://muicuiu.dumb1.com/2a02a05a08a09a07/The-Penwyth-Curse-Medieval-Song-6-by-Catherine-Coulter.pdf
    • http://muicuiu.dumb1.com/2a07a02a07a05a03/Remember-Our-Song-A-Billionaire-Romance-Our-Song-3-by-Emma-South.pdf
    • http://muicuiu.dumb1.com/4a03a07a06a02a04/Two-Songs-Song-of-Prisoner-amp-Song-of-Malaya-by-Okot-p-39-Bitek.pdf
    • http://muicuiu.dumb1.com/4a07a05a01a04a09/Fire-Song-Siren-Song-3-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/2a08a08a09a01a03/With-You-Beside-Me-A-Coulter-Family-Double-Kendrick-Coulter-Harrigan-2-3-by-Catherine-Anderson.pdf
    • http://muicuiu.dumb1.com/1a01a00a08a04a04/Sky-Song-Sky-Song-trilogy-1-by-Sharon-Sant.pdf
    • http://muicuiu.dumb1.com/2a07a03a00a05a02/A-Song-of-Ice-and-Fire-5-Book-Boxed-Set-A-Game-of-Thrones-A-Clash-of-Kings-A-Storm-of-Swords-A-Feast-for-Crows-A-Dance-with-Dragons-Song-of-Ice-amp-Fire-1-5-by-George-R-R-Martin.pdf
    • http://muicuiu.dumb1.com/4a06a08a09a01a06/Tell-Me-Why-The-Beatles-Album-By-Album-Song-By-Song-The-Sixties-And-After-by-Tim-Riley.pdf
    • http://muicuiu.dumb1.com/1a07a06a06a01a00/Wolf-Song-Wolf-Song-Trilogy-1-by-Frank-W-Smith.pdf
    • http://muicuiu.dumb1.com/2a05a00a07a03a03/Witch-Song-Witch-Song-1-by-Amber-Argyle.pdf
    • http://muicuiu.dumb1.com/3a04a01a01a00/A-Song-of-Ice-and-Fire-A-Song-of-Ice-and-Fire-1-4-by-George-R-R-Martin.pdf
    • http://muicuiu.dumb1.com/1a01a05a02a01a01a09/The-Lyrics-To-His-Song-2-The-Lyrics-To-His-Song-2-by-Krystal-Armstead.pdf
    • http://muicuiu.dumb1.com/3a08a02a01a09a06/A-Song-for-No-Man-s-Land-A-Song-for-No-Man-s-Land-1-by-Andy-Remic.pdf
    • http://muicuiu.dumb1.com/4a01a05a09a06a06/Rebel-Song-Rebel-Song-1-by-Amanda-J-Clay.pdf
    • http://muicuiu.dumb1.com/7a05a01a03a04a08/Impulse-by-Catherine-Coulter.pdf
    • http://muicuiu.dumb1.com/9a06a07a07a04a05/Aftershocks-by-Catherine-Coulter.pdf
    • http://muicuiu.dumb1.com/2a09a06a02a07a07/Beyond-Eden-by-Catherine-Coulter.pdf
    • http://muicuiu.dumb1.com/2a08a08a01a06a00/Blowout-by-Catherine-Coulter.pdf
    • http://muicuiu.dumb1.com/2a08a08a09a01a03/With-You-Beside-Me-A-Coulter

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