Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad70a646bfd58a9c…

MALICIOUS

PDF

14.9 KB Created: 2019-05-07 04:03:30 +01:00 Authoring application: mPDF 5.7 First seen: 2021-07-10
MD5: ed7735be9352b640b04e751da70bea05 SHA-1: f053defe928b9e722ed8cfe6d349c3055fbcf774 SHA-256: ad70a646bfd58a9cf48ad53bd70cd4a721d1f7e87633024123e08f59eb0bf7e8
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, disguised with titles that mimic popular manga. This technique, identified by the PDF_SEO_LINK_FARM heuristic, suggests an attempt to trick users into downloading potentially malicious content by presenting it as legitimate. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/3a01a04a04a02a07/Attack-on-Titan-Vol-5-Attack-on-Titan-5-by-Hajime-Isayama.pdf In PDF document text
    • http://muicuiu.dumb1.com/3a01a04a02a02a05/Attack-on-Titan-Vol-3-Attack-on-Titan-3-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a04a07a01a06a04/Attack-on-Titan-Vol-11-Attack-on-Titan-11-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a01a00a06a03/Attack-on-Titan-Vol-2-Attack-on-Titan-2-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a04a07a00a01a07/Attack-on-Titan-Vol-13-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a03a03a02a05a05/Attack-on-Titan-Vol-13-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a05a04a07a07/Attack-on-Titan-Vol-12-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a00a01a05/Attack-on-Titan-No-Regrets-Volume-01-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a09a07a07a01/-10-Shingeki-no-Kyojin-10-Attack-on-Titan-10-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a07a05a09a03a08/-18-Shingeki-no-Kyojin-18-Attack-on-Titan-18-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a07a06a01a08a08/-20-Shingeki-no-Kyojin-20-Attack-on-Titan-20-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a04a00a03a04a02/-24-Shingeki-no-Kyojin-24-Attack-on-Titan-24-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a01a09a09a00a02/-21-Shingeki-no-Kyojin-21-Attack-on-Titan-21-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a00a04a01a06a08/-7-Shingeki-no-Kyojin-7-Attack-on-Titan-7-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a00a07a09a06a06/-22-Shingeki-no-Kyojin-22-Attack-on-Titan-22-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a05a07a09a06a07/-17-Shingeki-no-Kyojin-17-Attack-on-Titan-17-by-Hajime-Isayama.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a00a00a06a06a05/Attack-on-Titan-Anthology-by-Scott-Snyder.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a07a05a06a09a05/The-Science-of-Attack-on-Titan-by-Rikao-Yanagita.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a01a05a02a08a01/The-Titan-Series-Boxed-Set-Titan-1-2-3-3-1-3-2-by-Cristin-Harber.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a06a03a03a02a09/L-Attaque-des-Titans-T04-by-Hajime-Isayama.pdfIn PDF document text

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