SUSPICIOUS
28
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF document contains embedded JavaScript, indicated by multiple heuristic firings. The presence of 'stream_000_off00000060.js' and 'stream_092_off0000b757.js' suggests that these JavaScript streams are the primary mechanism for malicious activity. The JavaScript is likely designed to download and execute a second-stage payload, although the exact functionality is obscured by the embedded nature and potential obfuscation.
Machine Learning
- Nyx PDF Classifier clean score 0.0023
Heuristics 5
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JavaScript action low 1 related finding PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic (matched inside decoded stream)
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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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 http://www.w3.org/1999/02/22-rdf-syntax-ns# In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://www.adobe.com/products/acrobat/readstep2.htmlReferenced by PDF JavaScript
- http://www.w3.org/1999/xhtmlReferenced by PDF JavaScript
- http://www.xfa.org/schema/xfa-data/1.0/Referenced by PDF JavaScript
- http://www.adobe.com/products/acrobat/readstep2.html\In PDF document text
Extracted artifacts 10
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_000_off00000060.js |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x60 | 19085 bytes |
SHA-256: 7f10d616bb90b37a0e25135b92c4dff088640e2f600cc164e2beaa6867c899fd |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 3 long base64-like blob(s).
|
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stream_092_off0000b757.js |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0xB757 | 2153 bytes |
SHA-256: 20a26195600f6750801cc57e0233e3e78ad507d40b63eb81e1b2a0bd849adef6 |
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objstm_0295_00.bin |
pdf-objstm-decoded | PDF /ObjStm 295 0 obj (inflated) | 6014 bytes |
SHA-256: 1a57f5c62701446b5b97aa5aaa7aa994bfea69ad48355a975baaf9d921e820cf |
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font_00_cff_off0000ba1b.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0xBA1B | 2946 bytes |
SHA-256: 38933c356ff7f23a476df5cd2daa9cb8c1d6ef83f1527b71b810802f3525a9cf |
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font_01_cff_off0000c16b.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0xC16B | 261 bytes |
SHA-256: 92e8001e7cf64f7f03513e28099e89d51002655e1aed105c0374ae732501737d |
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font_02_cff_off0000c2ad.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0xC2AD | 4343 bytes |
SHA-256: 754a96c0a0209cecd2b221bfa4225ad35ec9b683a5e3bfc9f2284bba5bd4da9b |
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font_03_cff_off0000d10a.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0xD10A | 3298 bytes |
SHA-256: a90f0dbb43f916e99f41a6196f772fba3d0fb77e0ca430554e8e1390a59bdf10 |
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font_04_cff_off0000dc23.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0xDC23 | 2964 bytes |
SHA-256: 3f0cdc9975e296e6f9bb23fc01f801c9fa8ecd9e9fbe0a7bb04772c79a2436f7 |
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font_05_cff_off0000e5dd.bin |
pdf-font-stream | PDF embedded font (cff) at offset 0xE5DD | 329 bytes |
SHA-256: 83bfeb19b0c4845db32df4914d0b83fe1d3d21784ac5d9c0c916787b851525a4 |
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font_06_sfnt_off0000e750.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE750 | 4136 bytes |
SHA-256: 492b5a9efde22c80ef817f302f0405947a15d876faee943ccee3c81cd926bc41 |
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