MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=grade+2+math+worksheets+free+pdf'. The document body, though heavily obfuscated, appears to contain text related to 'grade 2 math worksheets free pdf', suggesting a lure to entice users to click the malicious link. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent.
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/pify?keyword=grade+2+math+worksheets+free+pdf
- https://static.usrfiles.com/ugd/b8c837_47e7a86fa69c4d9eb9c52e1113801517.pdf
- https://static.usrfiles.com/ugd/599026_6e335bc1cbb14e8ab66ea0ed2664acc0.pdf
- https://static.usrfiles.com/ugd/b8c837_0a22ce2e91b4460cbcc5799240f38e63.pdf
- https://static.usrfiles.com/ugd/b8c837_1285a1d03aaa434186f99d8ee747aa87.pdf
- https://static.usrfiles.com/ugd/71fd01_2dee3d0521f44caea09a3c7290a3b618.pdf
- https://static.usrfiles.com/ugd/8acad3_ba2bdbb948a24dbaae44aae99752b663.pdf
- https://static.usrfiles.com/ugd/b8c837_4ed6f6ed7cc54df5bfc99d64364d70cb.pdf
- https://static.usrfiles.com/ugd/3fc21f_2a297d5c6018424b9a71a00b8b4083e6.pdf
- https://static.usrfiles.com/ugd/b8c837_fcd191c090a4461fa5a54edd0783f4d9.pdf
- https://static.usrfiles.com/ugd/b8c837_428cec0b543d4fd7a34cd88414831e33.pdf
- https://static.usrfiles.com/ugd/1decf9_1a7173ff1b96450e8e74d1b1258f81a5.pdf
- https://static.usrfiles.com/ugd/b8c837_0e2117e68b004dbc897498a972b48566.pdf
- https://static.usrfiles.com/ugd/4b874d_1d82b71997ab4fc3be84046b08cc1923.pdf
- https://static.usrfiles.com/ugd/f459ea_8c06d288956446fbae6dd5005b694721.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_off00005e22.bin914392f129ff1aa0ee9254e599f7988662edf659f58f897f3a2f83e56b157fb2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E22 | 5568 bytes |
font_01_sfnt_off00007103.bin9bbab23cb1e45e9053d536872152975456ea7f54300dece0f056d46c2523cd33 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7103 | 10332 bytes |
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