MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/wix?keyword=information+systems+questions+and+answers+pdf'. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on static.usrfiles.com. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure.
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=information+systems+questions+and+answers+pdf
- https://static.usrfiles.com/ugd/de60da_25f9652b064b482d89e5591605f50452.pdf
- https://static.usrfiles.com/ugd/b8c837_9690b3e34f7743159963d5027f40e0e5.pdf
- https://static.usrfiles.com/ugd/269bb8_465c95b91ad84730a831cf98d5c19cd9.pdf
- https://static.usrfiles.com/ugd/24853a_ca5a5e138b124721af79030e0fd34d25.pdf
- https://cdn.shopify.com/s/files/1/0428/8158/1209/files/56709644438.pdf
- https://cdn.shopify.com/s/files/1/0435/4614/9023/files/48907852401.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdf
- https://static.usrfiles.com/ugd/b8c837_99fe961d527c40e48348b34a240f6a04.pdf
- https://static.usrfiles.com/ugd/5360f8_788cd8c178c14a28b3c91ca68d1b7788.pdf
- https://static.usrfiles.com/ugd/b8c837_c1c55af24b0a4521af701ff3025378bd.pdf
- https://static.usrfiles.com/ugd/b8c837_02fcd7a8c76540ff8357d32089e30245.pdf
- https://static.usrfiles.com/ugd/c7ef1a_bf2230135dcb453c8d04690209a9c62d.pdf
- https://static.usrfiles.com/ugd/3f80ec_880dec4d1bc34cfca0508ee912cb65e7.pdf
- https://static.usrfiles.com/ugd/7198c1_6cae1bb05541472f9c33526a616ba67c.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_off0000a417.bin1d27e1093496d3d4807a57f33308941aa23d7726a418442b41d8f8089f6cc31f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA417 | 5292 bytes |
font_01_sfnt_off0000b608.bin18bf8ba985a5d1a9d5e98397fd13d6393d3ec42da344b4f78b554bb9de21861c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB608 | 10448 bytes |
font_02_sfnt_off0000d97b.bind1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD97B | 4324 bytes |
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