MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
T1059.001 PowerShell
The PDF contains numerous embedded links, with one pointing to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though heavily obfuscated, contains a reference to this URL, suggesting a lure to entice users to click. The presence of a PDF link farm heuristic further supports the attack pattern of using numerous links to potentially obscure malicious intent. 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.ru/wix?keyword=dining+room+and+banquet+management+4th+edition+pdf
- https://static.usrfiles.com/ugd/299074_d4f470f1840840c08ced93ac91684f0e.pdf
- https://static.usrfiles.com/ugd/b8c837_2724b14bc9f34f6b901553caa3dcf04c.pdf
- https://static.usrfiles.com/ugd/93c935_3e7b40c29b464cb888d7f0c71d2cb4b4.pdf
- https://static.usrfiles.com/ugd/b8c837_0033ea4452db4d5b989bf92049294be2.pdf
- https://static.usrfiles.com/ugd/b8c837_7c8bc529c4e34f1496d0b4591b5addac.pdf
- https://static.usrfiles.com/ugd/b11f6d_54e1c128f18649bf99491b59679a190c.pdf
- https://static.usrfiles.com/ugd/b8c837_1cf55a1e12b049beaef37598af8b68c3.pdf
- https://static.usrfiles.com/ugd/5ecadc_e64daf29f8a84c2aa7899cd347d05472.pdf
- https://static.usrfiles.com/ugd/4dd980_5eb15d7174cb4058a19fa488093ca779.pdf
- https://static.usrfiles.com/ugd/b8c837_9d87e6d813ea4411828a438f86427d85.pdf
- https://static.usrfiles.com/ugd/7ff653_26bf3967f980450b8358e3cefae4ac7f.pdf
- https://static.usrfiles.com/ugd/4b68be_763911309eb9470ebd3931c68d6ba942.pdf
- https://static.usrfiles.com/ugd/ce14f3_029c7009721b4835b2729e908df72737.pdf
- https://static.usrfiles.com/ugd/a838c0_6b8ad10195dd4e0689d3fb735c7ba1ad.pdf
- https://static.usrfiles.com/ugd/b8c837_5115728ce64343c68e1683551c93fbcf.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/
- https://static.usrfiles.com/ugd/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006ae5.bin374da2553052cb05958ad1475fb54c27bec6dc932550163e8fb3fa351681dfde |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6AE5 | 5596 bytes |
font_01_sfnt_off00007dbc.bin1e36452865cd20d74e265dc20586efa4774f56864831651cf140dc8a8a6ab0b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DBC | 10424 bytes |
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