Malicious PDF — malware analysis report

Static analysis result for SHA-256 d730130e81c66c75…

MALICIOUS

PDF

14.6 KB Created: 2019-04-30 04:36:42 +01:00 Authoring application: mPDF 5.7
MD5: 78f7b346e3f6e01d807ed101e6080162 SHA-1: 47ef1d13549f8f3b78842155b86b3cf6cceae822 SHA-256: d730130e81c66c75b72a332a5c3709e490fc5dbb2616aec0e1c24c355a0b8c4e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links to external PDFs, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. While the specific URLs themselves are currently marked as benign, the sheer volume and the heuristic firing suggest a malicious intent to redirect users. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/7a05a04a08a05a00/Satan-No-S-in-by-Hajime-Tsukat-.pdf
    • http://muicuiu.dumb1.com/6a01a07a03a00a02/Satan-s-Revenge-Satan-s-Sons-MC-2-by-Celia-Loren.pdf
    • http://muicuiu.dumb1.com/4a04a07a00a01a07/Attack-on-Titan-Vol-13-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/5a06a03a03a02a09/L-Attaque-des-Titans-T04-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/8a00a03a06a05a07/Mayo-Chiki-Vol-4-by-Hajime-Asano.pdf
    • http://muicuiu.dumb1.com/8a00a03a06a06a00/Mayo-Chiki-Vol-6-by-Hajime-Asano.pdf
    • http://muicuiu.dumb1.com/7a05a04a07a07/Attack-on-Titan-Vol-12-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/1a00a03a03a02a05a05/Attack-on-Titan-Vol-13-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/8a05a06a04a00a03/Masugureibu-Yakata-No-Shima-by-Hajime-Tsukat-.pdf
    • http://muicuiu.dumb1.com/1a00a00a01a05/Attack-on-Titan-No-Regrets-Volume-01-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/4a00a07a09a06a06/-22-Shingeki-no-Kyojin-22-Attack-on-Titan-22-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/3a07a06a01a08a08/-20-Shingeki-no-Kyojin-20-Attack-on-Titan-20-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/8a09a07a07a01/-10-Shingeki-no-Kyojin-10-Attack-on-Titan-10-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/3a07a05a09a03a08/-18-Shingeki-no-Kyojin-18-Attack-on-Titan-18-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/4a00a04a01a06a08/-7-Shingeki-no-Kyojin-7-Attack-on-Titan-7-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/3a05a07a09a06a07/-17-Shingeki-no-Kyojin-17-Attack-on-Titan-17-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/9a09a03a07a01a08/Kodansha-Comics-Digital-Sampler-Unreal-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/8a04a00a03a04a02/-24-Shingeki-no-Kyojin-24-Attack-on-Titan-24-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/1a00a09a03a04a09a01/-118-Hajime-no-Ippo-118-Fighting-Spirit-118-by-Joji-Morikawa.pdf
    • http://muicuiu.dumb1.com/6a01a09a09a00a02/-21-Shingeki-no-Kyojin-21-Attack-on-Titan-21-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/3a07a06a01a08a08/-20-Shingeki-no-Kyojin-20-Attack-o

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