MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO spamming attempt. One of the primary links, https://ttraff.ru/wix?keyword=libro+fisica+general+hector+perez+montiel+5ta+edicion, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL, reinforcing the lure.
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.ru/wix?keyword=libro+fisica+general+hector+perez+montiel+5ta+edicion
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/10e3af_e9059f5789674d44b2597f0758bf5440.pdf
- https://static.usrfiles.com/ugd/b8c837_9dd735709d854609871dd0341f59683b.pdf
- https://static.usrfiles.com/ugd/b8c837_ec1581671e9f4cbabdd2bf6ea3278440.pdf
- https://static.usrfiles.com/ugd/5bb01c_c81eca78699547dea776525015daa82e.pdf
- https://cdn.shopify.com/s/files/1/0431/9513/8208/files/49310959102.pdf
- https://static.usrfiles.com/ugd/b8c837_cff675cc254f44c1bde6a67e3e295c02.pdf
- https://static.usrfiles.com/ugd/10e3af_ab0ab59db0654023be5a66b07468569c.pdf
- https://static.usrfiles.com/ugd/e3c460_d7102cc6ce2e40e69829c95bb236a62b.pdf
- https://cdn.shopify.com/s/files/1/0437/4455/9258/files/avengers_endgame_soundtrack_portals.pdf
- https://cdn.shopify.com/s/files/1/0438/9175/3115/files/adjetivos_comparativos_em_ingles.pdf
- https://cdn.shopify.com/s/files/1/0437/2063/8632/files/denovawetitutexazira.pdf
- https://cdn.shopify.com/s/files/1/0432/2502/2621/files/gipafi.pdf
- https://cdn.shopify.com/s/files/1/0432/0709/8529/files/accountancy_comprehensive_project_for_class_12.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_off000056e5.bin68cb61ad603af6ae3dbe1380d4e73253f53b3bd412b055e4e32dbcd870d38be2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x56E5 | 5824 bytes |
font_01_sfnt_off00006a88.bina52fb6c4a2a9fa246df1cad32016eb95b80ea709a88e1a0094edf569f08a63df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A88 | 11644 bytes |
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