MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a lure related to 'Kuk university exam date sheet ba final' and embeds a link to `https://ttraff.cc/wix?keyword=kuk+university+exam+date+sheet+ba+final`. This URL is flagged as a known malicious redirector. The PDF also contains a large number of external links, many pointing to `static.usrfiles.com`, suggesting a link farm or SEO poisoning tactic to distribute the malicious redirector. The ML classifier strongly flagged this PDF as malicious.
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.cc/wix?keyword=kuk+university+exam+date+sheet+ba+final
- https://static.usrfiles.com/ugd/e42ee3_7c64df0b90e546f59a73fda8323050db.pdf
- https://static.usrfiles.com/ugd/ba3095_62d7a82bd2524871a97b9222a024eb62.pdf
- https://static.usrfiles.com/ugd/299074_dfc1d28b2b714180b5593199d730af36.pdf
- https://static.usrfiles.com/ugd/b8c837_c6865350c6904ee082f0a3b299c15577.pdf
- https://cdn.shopify.com/s/files/1/0437/2316/1768/files/php_ldap_set_option_debug.pdf
- https://cdn.shopify.com/s/files/1/0437/4921/2309/files/97648413457.pdf
- https://static.usrfiles.com/ugd/576447_d00f490d19c54198a40ee6346bc397fa.pdf
- https://static.usrfiles.com/ugd/73f3b0_1b77ed92bb4a470186f2690710e51b9d.pdf
- https://static.usrfiles.com/ugd/0adedf_7cbb43abb979405492c8e674fee91bc5.pdf
- https://static.usrfiles.com/ugd/c20ea7_48585af7273b4511a4c02e533512b642.pdf
- https://static.usrfiles.com/ugd/b8c837_cb47b5f1d4014dbdb96ac6e2fda0fb45.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_off00005926.bin5b529125c71513d9cc1922cd18937c24bac1d933e04b4ee8229e0d3292ab4ea0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5926 | 5320 bytes |
font_01_sfnt_off00006b12.bine3d8531d21544f92ab2f7e4d596f307d73724274f6fd0675b41bb30c7c5be275 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B12 | 10184 bytes |
font_02_sfnt_off00008db4.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8DB4 | 4324 bytes |
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