Malicious PDF — malware analysis report

Static analysis result for SHA-256 2687dc158fe03e12…

MALICIOUS

PDF

17.1 KB Created: 2019-04-30 03:36:44 +01:00 Authoring application: mPDF 5.7
MD5: b19bd53f87bdf64b377ce6f74ca2a507 SHA-1: 8c205b135aae0b6ae6b8e6c826050b51e7d4918b SHA-256: 2687dc158fe03e12d792741653a18d8c0ebcf087d82a5fb0acaba446bfb99902
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and link farm heuristic suggest a delivery mechanism for potentially harmful content, possibly involving social engineering to trick users into clicking the links.

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/1a01a00a02a00a07a08/What-A-Girl-Wants-by-Reon-Laudat.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a01a06a04/Set-Yourself-Free-Reon-Schuttes-10-Principles-to-Break-Out-of-Your-Personal-Prison-Through-the-Power-of-Choice-by-Reon-Schutte.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a00a08a07/Set-Yourself-Free-Reon-Schutte-s-10-Principles-to-Break-Out-of-Your-Personal-Prison-Through-the-Power-of-Choice-by-Reon-Schutte.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a00a08a01/The-Flirtationship-by-Reon-Laudat.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a00a08a08/It-s-In-His-kiss-by-Reon-Laudat.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a00a08a04/Wanna-Get-To-Know-Ya-by-Reon-Laudat.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a01a05a06/Crimson-Game-by-Reon-Merryweather.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a00a08a05/He-Could-Be-the-One-Mistywood-Lane-Book-2-by-Reon-Laudat.pdf
    • http://muicuiu.dumb1.com/3a04a09a07a04a04/The-Gun-by-Fuminori-Nakamura.pdf
    • http://muicuiu.dumb1.com/5a07a02a01a09a01/Gen-1-by-Shige-Nakamura.pdf
    • http://muicuiu.dumb1.com/4a08a05a05a01a09/The-Gun-by-Fuminori-Nakamura.pdf
    • http://muicuiu.dumb1.com/2a08a04a04a04a02/-Haru-no-E-by-Asumiko-Nakamura.pdf
    • http://muicuiu.dumb1.com/2a09a04a09a03a07/Cult-X-by-Fuminori-Nakamura.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/1a05a02a06a05a08/Skip-Beat-Vol-21-by-Yoshiki-Nakamura.pdf
    • http://muicuiu.dumb1.com/3a00a05a02a04a01/Skip-Beat-Vol-09-by-Yoshiki-Nakamura.pdf
    • http://muicuiu.dumb1.com/4a04a02a00a06a02/Skip-Beat-Vol-24-by-Yoshiki-Nakamura.pdf
    • http://muicuiu.dumb1.com/4a04a02a00a05a08/Skip-Beat-Vol-18-by-Yoshiki-Nakamura.pdf
    • http://muicuiu.dumb1.com/2a08a03a08a04a08/Classmates-Doukyuusei-by-Asumiko-Nakamura.pdf
    • http://muicuiu.dumb1.com/2a08a04a00a08a07/-Sora-to-Hara-by-Asumiko-Nakamura.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a01a05a06/Crimson-Game-by-Reon-Merryweather

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