Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c29deb3405feffd…

MALICIOUS

PDF

16.3 KB Created: 2019-05-07 04:37:49 +01:00 Authoring application: mPDF 5.7 First seen: 2020-12-28
MD5: 62b41e148efb6240a176f55be11fb8f7 SHA-1: 0083e9f4c141c1b144665c90b14e8516388cac3b SHA-256: 9c29deb3405feffd725786bff69f94b49e2efb3659f7e3ffe7d534e17341b606
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the document body is heavily obfuscated, the presence of numerous links to external PDF files suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/1a07a08a02a01a01/Yoko-by-Rosemary-Wells.pdf In PDF document text
    • http://muicuiu.dumb1.com/7a05a01a09a00a02/Yoko-Writes-Her-Name-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a03a04a07a08a04/Yoko-Finds-Her-Way-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a05a04a07a07a08/Read-to-Your-Bunny-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a09a02a00a03a00/Jeremiah-Learns-to-Read-by-Jo-Ellen-Bogart.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a04a01a05a00/When-No-One-Was-Looking-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a08a04a09a06a01/Max-s-Christmas-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a05a03a00a08a02/Max-s-New-Suit-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a05a03a06a07a09/Max-s-Birthday-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a05a02a08a05/Stanley-and-Rhoda-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a07a02a09a05a09/The-Halloween-Parade-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a04a00a04a08a00/Lassie-Come-Home-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a08a05a01a07a02/My-Havana-Memories-of-a-Cuban-Boyhood-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a05a04a09a05a08/The-Island-Light-Voyage-to-the-Bunny-Planet-2-by-Rosemary-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a05a02a01a09a06/Yoko-s-diary-by-Yoko-Moriwaki.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a03a01a00a05a01/Southern-Horrors-and-Other-Writings-The-Anti-Lynching-Campaign-of-Ida-B-Wells-1892-1900-by-Ida-B-Wells-Barnett.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a04a01a00a02a04/The-Time-Machine-By-H-G-Wells---Illustrated-Comes-with-a-Free-Audiobook-by-H-G-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a01a08a06a07a08/BEN-AARONOVITCH-SERIES-READING-ORDER-A-READ-TO-LIVE-LIVE-TO-READ-CHECKLIST-by-Rita-Bookman.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a01a05a02a09/The-Complete-Science-Fiction-Treasury-of-H-G-Wells-by-H-G-Wells.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a05a01a08a09a08/The-Time-Machine-Herbert-George-Wells-by-H-G-Wells.pdfIn PDF document text

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