Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73f47d3bd990295…

MALICIOUS

PDF

17.3 KB Created: 2019-04-30 06:13:16 +01:00 Authoring application: mPDF 5.7
MD5: 9a5c9c1730fc1b472156c0f0c0b2b193 SHA-1: 3cc04b2c396e4063a3d24c539639ee031b43d6c5 SHA-256: a73f47d3bd9902953b5d2f25eeb370df2299f7cbcc9a91b0982cbf153ffb421a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links to external websites, a technique often used for SEO poisoning or to drive traffic to malicious sites. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users. The primary attack pattern involves a link farm designed to manipulate search engine results or direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

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/1a04a06a02a02/Benito-by-Clyde-Robert-Bulla.pdf
    • http://muicuiu.dumb1.com/4a04a09a09a00a02/The-Chalk-Box-Kid-by-Clyde-Robert-Bulla.pdf
    • http://muicuiu.dumb1.com/4a00a02a03a03a09/The-Sword-in-the-Tree-by-Clyde-Robert-Bulla.pdf
    • http://muicuiu.dumb1.com/1a05a06a09a06a06/Fifty-Plastic-Bottles-and-the-Shoeshine-Box-by-Maedeiva-Myre.pdf
    • http://muicuiu.dumb1.com/3a04a05a06a01/The-Girl-In-The-Ice-by-Robert-Bryndza.pdf
    • http://muicuiu.dumb1.com/1a05a00a04a09a02/The-Girl-Philippa-by-Robert-W-Chambers.pdf
    • http://muicuiu.dumb1.com/3a01a00a01a04a02/Legacy-The-Girl-in-the-Box-8-by-Robert-J-Crane.pdf
    • http://muicuiu.dumb1.com/3a01a04a09a01a06/Who-s-That-Girl-with-the-Gun-A-Story-of-Annie-Oakley-by-Robert-M-Quackenbush.pdf
    • http://muicuiu.dumb1.com/2a05a08a09/The-Girl-in-the-Ice-Detective-Erika-Foster-1-by-Robert-Bryndza.pdf
    • http://muicuiu.dumb1.com/4a07a09a00/The-Trapped-Girl-Tracy-Crosswhite-4-by-Robert-Dugoni.pdf
    • http://muicuiu.dumb1.com/2a00a09a01a07a06/The-Japanese-Devil-Fish-Girl-and-Other-Unnatural-Attractions-Japanese-Devil-Fish-Girl-1-by-Robert-Rankin.pdf
    • http://muicuiu.dumb1.com/1a07a06a04a01a06/The-Stowaway-by-Clyde-Edwards.pdf
    • http://muicuiu.dumb1.com/4a00a01a00a07a01/Applebet-An-ABC-by-Clyde-Watson.pdf
    • http://muicuiu.dumb1.com/2a09a09a00a06/As-Big-as-the-West-by-Clyde-A-Milner-III.pdf
    • http://muicuiu.dumb1.com/5a04a03a00a09a07/From-Shoeshine-to-Star-Wars-The-Chronicles-of-Walt-Jourdan-A-memoir-by-Walt-Jourdan.pdf
    • http://muicuiu.dumb1.com/3a06a09a00a05a05/Girl-with-the-Dragon-Tattoo-Trilogy-Bundle-The-Girl-with-the-Dragon-Tattoo-The-Girl-Who-Played-with-Fire-The-Girl-Who-Kicked-the-Hornet-s-Nest-by-Stieg-Larsson.pdf
    • http://muicuiu.dumb1.com/2a08a07a02a08a05/Bossy-amp-Clyde-by-Jaid-Black.pdf
    • http://muicuiu.dumb1.com/2a07a09a06a01/Cowardly-Clyde-by-Bill-Peet.pdf
    • http://muicuiu.dumb1.com/4a05a06a07a09/Walking-Across-Egypt-by-Clyde-Edgerton.pdf
    • http://muicuiu.dumb1.com/3a03a00a04a05a07/The-Floatplane-Notebooks-by-Clyde-Edgerton.pdf
    • http://muicuiu.dumb1.com/2a00a09a01a07a06/The-Japanese-Devil-Fish-Girl-and-Other-Unnatural-Attractions-Japan

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