Malicious PDF — malware analysis report

Static analysis result for SHA-256 b919be7be797621e…

MALICIOUS

PDF

22.2 KB Created: 2019-04-30 04:54:21 +01:00 Authoring application: mPDF 5.7 First seen: 2021-10-23
MD5: 91c6463ca66c49e7571d61004ac7f5ad SHA-1: e985e9d13e919dafbe8bfd5615fee2f80bb602ca SHA-256: b919be7be797621e992b64cb4bd6c7c59eee9186b461cdefb7a285981674a318
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that form a link farm, disguised as book downloads. The ML classifier strongly indicates maliciousness, and the heuristic for SEO link farms confirms the suspicious nature of the URLs. While no scripts were explicitly extracted, the structure suggests an attempt to redirect users to potentially malicious content, likely through embedded JavaScript or other PDF-specific exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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/9a04a01a06a06a01/The-Iron-Thorn---Fl-sternde-Magie-Iron-Codex-1-by-Caitlin-Kittredge.pdf In PDF document text
    • http://muicuiu.dumb1.com/4a07a08a00a00/The-Iron-Thorn-Iron-Codex-1-by-Caitlin-Kittredge.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a04a09a01a01a07/Iron-Fey-Series-Volume-1-The-Iron-King-Winter-s-Passage-The-Iron-Daughter-The-Iron-Queen-Summer-s-Crossing-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a03a06a08a02/Iron-Angel-Deepgate-Codex-2-by-Alan-Campbell.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a08a02a09a06a02/Vengeance-of-the-Iron-Dwarf-Companions-Codex-Book-3-by-R-A-Salvatore.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a03a04a05a05/The-Iron-Traitor-The-Iron-Fey-Call-of-the-Forgotten-2-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a06a08a03a03/Iron-King-1-The-Iron-Fey-Manga-1-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a03a03a05a02a07/The-Iron-Duke-Iron-Seas-1-by-Meljean-Brook.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a03a06a09a07a05/The-Iron-Daughter-Iron-Fey-2-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a08a03a02/The-Iron-Daughter-The-Iron-Fey-2-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a07a08a00a03a06/The-Iron-King-The-Iron-Fey-1-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a03a03a04a02a02/The-Iron-Queen-The-Iron-Fey-3-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a04a02a04a07/Iron-s-Prophecy-The-Iron-Fey-4-5-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a03a03a05a02a06/The-Iron-Knight-The-Iron-Fey-4-by-Julie-Kagawa.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a04a06a09a04a06/Iron-Man-War-of-the-Iron-Men-by-Fred-Van-Lente.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a00a08a07a03a05/The-Iron-and-Steel-Magazine-Vol-10-Successor-to-the-Metallographist-a-Monthly-Publication-Devoted-to-the-Iron-and-Steel-Industry-July-to-December-1905-by-Albert-Sauveur.pdfIn PDF document text
    • http://muicuiu.dumb1.com/8a00a08a07a02a07/The-Iron-and-Steel-Magazine-Vol-7-Successor-to-the-Metallographist-A-Monthly-Publication-Devoted-to-the-Iron-and-Steel-Industry-January-to-June-1904-by-Albert-Sauveur.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a05a03a01a05a05/Erection-and-Inspection-of-Iron-and-Steel-Constructions-Written-for-the-Use-of-Architects-Engineers-and-Builders-and-for-Civil-Service-Candidates-for-the-Position-of-Inspector-of-Iron-and-Steel-by-Lupescu-Morris-Bernfeld.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a08a04a05a06a07/Dark-Swan-Bundle-Storm-Born-Thorn-Queen-amp-Iron-Crowned-Dark-Swan-1-3-by-Richelle-Mead.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a09a01a08a06a02/Marvel-Now-PB-Iron-Man-Glauben-Marvel-Now-Iron-Man-by-Kieron-Gillen.pdfIn PDF document text

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