MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. This URL is presented within the document body, disguised as a book title, likely to lure users into clicking it. The document also contains a large number of embedded links, many pointing to 'static.usrfiles.com', which is flagged as a link farm. The ML classifier also strongly indicated maliciousness.
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.club/wix?keyword=las+ense%2525C3%2525B1anzas+de+don+juan+libro+completo+pdf
- https://static.usrfiles.com/ugd/d3758e_0ae4278ebd104ef88e5c7b06e9233ee4.pdf
- https://static.usrfiles.com/ugd/493135_dd97fcc24df047669d4b179c0a162ac9.pdf
- https://static.usrfiles.com/ugd/51c472_d60abe1219ae4126b18755b2749d2b45.pdf
- https://static.usrfiles.com/ugd/b972d5_37e6eaeb6cc84fc7a4c371d5fb9c42cc.pdf
- https://cdn.shopify.com/s/files/1/0434/8674/0646/files/pneumonia_vaccine_guidelines.pdf
- https://cdn.shopify.com/s/files/1/0431/7210/2308/files/stewart_essential_calculus_2nd_edition.pdf
- https://cdn.shopify.com/s/files/1/0431/7085/7124/files/blue_bossa_jazz_piano.pdf
- https://static.usrfiles.com/ugd/b8c837_f8f5da4104c14252bd22190d61d8cc19.pdf
- https://static.usrfiles.com/ugd/b8c837_155ba0f02f494e728781041923348362.pdf
- https://static.usrfiles.com/ugd/b8c837_1f0d6ebb48224e0291c738e83f12f25a.pdf
- https://static.usrfiles.com/ugd/b8c837_fcc17a7272924eab8106535be1aeb6b5.pdf
- https://static.usrfiles.com/ugd/e4a001_b3abd0c0616848168bb2ade5d8d2dd5f.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000066b9.binc3398333b2fd7a2f993a7f7343b6ecd01522cceda7d5c06729c601940ed7412e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66B9 | 5604 bytes |
font_01_sfnt_off0000796e.bin1dc2c98ac144ab53947aee5da2ffce813518b1af1f634752f576da6009d28355 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x796E | 11048 bytes |
font_02_sfnt_off00009d8f.bin4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D8F | 4324 bytes |
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