Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cb9942870454317…

MALICIOUS

PDF

13.5 KB Created: 2019-05-07 03:41:10 +01:00 Authoring application: mPDF 5.7 First seen: 2021-10-14
MD5: fd481e1c6fdc45e371211c119fdb5d0e SHA-1: 76e84e6a93949314615e9d6eadb86b69b63d1bd2 SHA-256: 1cb9942870454317019d5557f23818fd9fa57e269fe203c2acde6c5cce87782f
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, identified as a 'PDF_SEO_LINK_FARM' heuristic. While the document body is unreadable, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/8a00a06a09a08a03/Fallen-Angel-by-Andrew-Taylor.pdf In PDF document text
    • http://muicuiu.dumb1.com/1a03a04a01a01a00/Fallen-Angel-Fallen-Angel-1-by-Heather-Terrell.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a00a09a02a08/Fallen-Angel-Fallen-Angel-1-by-Tracie-Podger.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a08a01a02a01a09/Fallen-Angel-by-Molly-Snow.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a07a03a02a07/Fallen-Angel-by-Mona-Ingram.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a09a09a02a05/Fallen-Angel-Part-1-by-Tracie-Podger.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a04a02a04a08/Angel-of-Darkness-The-Fallen-1-by-Cynthia-Eden.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a02a04a06a05/Catch-a-Fallen-Angel-by-Kathleen-Kane.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a04a08a00a08a02/Angel-Within-Fallen-Angels-2-by-Julie-Nicholls.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a05a08a08a09a08/Angel-Of-Mercy-The-Fallen-1-by-Lisa-Olsen.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a07a08a00a07/Angel-Betrayed-The-Fallen-2-by-Cynthia-Eden.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a03a06a01a01/Heaven-Sent-Fallen-Angel-3-by-Dawn-McClure.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a03a00a01a09/Angel-Rogue-Fallen-Angels-4-by-Mary-Jo-Putney.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a00a00a03a09/Fallen-Angel-Darkside-Trilogy-1-by-Dark-Scribe.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a07a06a06a05a01/The-Fallen-Chronicles-Broken-Angel-by-Amanda-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a08a03a03a05/Angel-s-Kiss-The-Fallen-Warriors-4-by-Rosalie-Lario.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a02a06a02a07/Angel-Fire-Fallen-Angels-1-by-Valmore-Daniels.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a07a07a05a02a09/Tears-from-a-Fallen-Angel-by-Stanley-Babyface-James-II.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a02a08a09a03a05/Waking-the-Watcher-The-Fallen-Angel-Trilogy-1-by-Kim-Loraine.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a07a06a02a08a09/Fallen-Angel-of-Mine-Overworld-Chronicles-3-by-John-Corwin.pdfIn PDF document text