MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The PDF contains embedded RichMedia (Flash) content that exploits CVE-2011-0611, a known vulnerability in Adobe Flash Player. This exploit is designed to execute arbitrary code, likely leading to the download and execution of a secondary payload. The presence of multiple embedded PDF objects further suggests a complex, multi-stage attack. No specific family could be identified from the available evidence.
Machine Learning
- Nyx PDF Classifier malicious score 0.9817
Heuristics 7
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Adobe Flash Player RichMedia exploit critical CVE likely CVE_2011_0611_FLASH_RICHMEDIAPDF combines RichMedia Flash activation with an embedded AS3 SWF loader (ByteArray/loadBytes) and shellcode heap-spray staging. This is the static exploit shape associated with CVE-2011-0611 Flash content delivered through Adobe Reader.
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Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGEA valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
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RichMedia (Flash) high PDF_RICHMEDIAPDF contains /RichMedia (Adobe Flash) which is a historic exploit vector (matched inside decoded stream)
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Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload (matched inside decoded stream)
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PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LUREPDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
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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 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/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objstm_0026_00.bin |
pdf-objstm-decoded | PDF /ObjStm 26 0 obj (inflated) | 1084 bytes |
SHA-256: 0841ed6ca2149b386133777ff3868f6222ba5033d6f52cd654a117610818bd40 |
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polyglot_child_pdf_off0000a335.pdf |
polyglot-child-pdf | Secondary PDF body inside pdf container at offset 0xA335 | 6976 bytes |
SHA-256: 4044524e0d63e7a8080f48c5c2ac2d90f174bca6a94b7529f245da6d43f70bcf |
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polyglot_child_pdf_off0000a688.pdf |
polyglot-child-pdf | Secondary PDF body inside pdf container at offset 0xA688 | 6125 bytes |
SHA-256: 0b1c923c8a0028794f3a3244dc498786746334f394e41678cc58ffbeb707d0a8 |
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