MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text that appears to be a 'candidate declaration form' and the malicious URL. The PDF also hosts a large number of external links, flagged by PDF_SEO_LINK_FARM, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. The ML classifier strongly supports the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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 https://ttraff.me/pify?keyword=npmcn+candidate+declaration+form
- https://static.usrfiles.com/ugd/b8c837_ffb9a4596e70430c8c666932c403267b.pdf
- https://static.usrfiles.com/ugd/b8c837_bdc6f285362147cfa31e5fbd468489fa.pdf
- https://static.usrfiles.com/ugd/b8c837_1e02d159814f48ccad7b6ad8e4ef7be0.pdf
- https://static.usrfiles.com/ugd/0dd040_ed53bc8fbd2f49a9ac6c1e6ef90908dd.pdf
- https://static.usrfiles.com/ugd/225520_88ddc02022324d62860aa7c58f0d4ec5.pdf
- https://static.usrfiles.com/ugd/856cea_43de77be1ae74d8aa7924525ef105b80.pdf
- https://static.usrfiles.com/ugd/bdeb4c_da76bf2a914045749fb600195d8e92fd.pdf
- https://static.usrfiles.com/ugd/289c5e_7d491603490b4e4aa3a721e75b97506b.pdf
- https://static.usrfiles.com/ugd/b8c837_16479d6eafdc437fa583bb2210179fda.pdf
- https://static.usrfiles.com/ugd/0dd040_0c4e5786022045bba04dd4259e8d4a67.pdf
- https://static.usrfiles.com/ugd/430cb2_b9e07cd6069b40769994d64a4828d831.pdf
- https://static.usrfiles.com/ugd/b8c837_70961a14e05f4d12a2d9443d7faf2da3.pdf
- https://static.usrfiles.com/ugd/b8c837_fab6ea02989040ffa9f81bd0e7f73aa6.pdf
- https://static.usrfiles.com/ugd/b8c837_6fb30e0e92f4478ca04f1c38d6a0d4a5.pdf
- https://static.usrfiles.com/ugd/299074_6943444277e049b283a18d85e647a08a.pdf
- https://static.usrfiles.com/ugd/b8c837_e84c15c12f9e4d40a939c7ea81608acc.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005d03.bin61664d70e48d8e6493c8531d9156d3379747a3d6eb28953001072216a14118e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D03 | 5092 bytes |
font_01_sfnt_off00006e44.bin0105005609dd6c0a6c1e9aad381f4fa413c0997ec07d2b14436da5fb6d40ac40 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E44 | 10212 bytes |
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