MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the same URL and a list of other PDF links, suggesting a link farm or SEO poisoning attempt. The ML classifier also flagged this PDF with high confidence. The primary attack vector appears to be social engineering through a seemingly relevant topic.
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=piano+notes+for+beginners+in+tamil
- https://static.usrfiles.com/ugd/fe83c3_3e95821aee8b4e95a95204073305eec0.pdf
- https://static.usrfiles.com/ugd/b98abb_1520dcf2252d4768a60c42fe403db174.pdf
- https://static.usrfiles.com/ugd/362633_923d6855da7f4400b5ec16fc09aa410e.pdf
- https://static.usrfiles.com/ugd/e643da_4f84362b9e5d487b84bdf7b56a64d35c.pdf
- https://static.usrfiles.com/ugd/9b5f63_cf7f8fb2fda3425a90b510060c8c2103.pdf
- https://static.usrfiles.com/ugd/e6092c_1617d02272294cc485ccf869ad6b3abd.pdf
- https://static.usrfiles.com/ugd/b8c837_3a4ea0cd60014030b103700e0c3e7d7e.pdf
- https://cdn.shopify.com/s/files/1/0454/6310/9790/files/needs_of_living_things_worksheet_grade_1.pdf
- https://cdn.shopify.com/s/files/1/0430/3850/7169/files/72150832901.pdf
- https://cdn.shopify.com/s/files/1/0437/9112/2584/files/zagexisitewu.pdf
- https://cdn.shopify.com/s/files/1/0428/7230/7875/files/microsoft_office_2016_free_crack_file.pdf
- https://static.usrfiles.com/ugd/b8c837_0eb3a93c1f1a424090ce6f63b8e968f0.pdf
- https://static.usrfiles.com/ugd/b8c837_4ce7df141ee543ad95be663f69fcede8.pdf
- https://static.usrfiles.com/ugd/fa6f14_5561d96b55dd41aaadfca43c3c2ce132.pdf
- https://static.usrfiles.com/ugd/455f95_2ae8f3a172c6460882fed59b7c31e1a5.pdf
- https://static.usrfiles.com/ugd/b8c837_b04b151de58545ecbe6dbab3f5d30991.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_off00004887.bin91b376239dbef5231601926b5aca242c2054260210c345d818b69a39afba1c55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4887 | 5228 bytes |
font_01_sfnt_off00005a37.bincba564890e16301ec61ac6761032fc558c2ce2474df8c8ef649aba5f22cf540f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A37 | 13512 bytes |
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