Malicious PDF — malware analysis report

Static analysis result for SHA-256 e539bfde09ed7f22…

MALICIOUS

PDF

12.5 KB Created: 2019-04-30 05:16:48 +01:00 Authoring application: mPDF 5.7
MD5: 8419d948fffaee79e71fad4b2126d12e SHA-1: c8aad42b716c977e619fb0640ba248418d41a1f2 SHA-256: e539bfde09ed7f22e6d05bea5fc2180797821634f17c25edd9386d2cbd6bde81
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, which is a common tactic for SEO poisoning or distributing malicious content. While the specific URLs extracted were labeled as benign, the heuristic 'PDF_SEO_LINK_FARM' and the ML classifier strongly indicate malicious intent. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to potentially harmful sites, likely for malware distribution or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

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/1a08a06a09a06a02/Ever-After-Once-Upon-2-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/2a05a09a06a03a05/A-Will-And-A-Way-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a09a02a02a04a08/Partners-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/3a01a08a04a09a00/The-Collector-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a05a02a00a06a02/Hot-Rocks-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/2a04a08a08a01a08/The-Collector-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/4a07a09a01a08a06/Tribute-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/9a00a03a07a08/The-Obsession-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a08a06a04a02a03/The-Right-Path-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/8a04a04a06a06/The-Witness-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/3a00a03a03a01a07/The-Welcoming-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a02a04a04a06/In-Dreams-Once-Upon-3-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/2a00a09a06a06a01/Montana-Sky-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a02a03a08a02/Once-Upon-a-Rose-Once-Upon-4-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a02a04a04a04/Once-Upon-a-Dream-Once-Upon-3-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a01a06a07a04a02a04/The-Right-Path-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/2a05a05a09a03a05/Tonight-and-Always-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a08a06a04a05a04/One-Summer-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/1a01a01a00a00/Birthright-by-Nora-Roberts.pdf
    • http://muicuiu.dumb1.com/3a04a02a08a07a01/Calhoun-Women-by-Nora-Roberts.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.