MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to redirector infrastructure or are part of a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=libros+de+lactancia+materna, which is flagged as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a spam or SEO manipulation tactic. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests a common tactic for hiding malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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.ru/wix?keyword=libros+de+lactancia+materna
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_596eac91c3754e41a552bd17dde78c53.pdf
- https://static.usrfiles.com/ugd/b8c837_b06b5aaf1a4144489b5c9a0afeb24d87.pdf
- https://static.usrfiles.com/ugd/5cf23b_d2802ca445004833889450e8e91d6bd9.pdf
- https://static.usrfiles.com/ugd/405339_0a29837dc1aa498ba0189959e210356e.pdf
- https://static.usrfiles.com/ugd/b8c837_66e615173dc842f485a4b6990aa8b426.pdf
- https://cdn.shopify.com/s/files/1/0440/9311/2472/files/79344062525.pdf
- https://cdn.shopify.com/s/files/1/0429/6127/2983/files/verbe_irrgulier_anglais_avec_traduction_franais.pdf
- https://static.usrfiles.com/ugd/3826db_4c31e95406c64c9fa4b5b346224ffda6.pdf
- https://static.usrfiles.com/ugd/defcb2_c44b5d1afbcf48729315e76328796c9f.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006ea5.binbf953dadbb971bbb9ef0ab385861afde5ef0af3684ba1e9d730eedddaaba9c87 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6EA5 | 5168 bytes |
font_01_sfnt_off00008012.binb6b93c0d1e0d8a0e5b63316626debb456d10162b1917c5559accfc27536ba159 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8012 | 11472 bytes |
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