MALICIOUS
266
Risk Score
Malware Insights
MITRE ATT&CK
T1071 Application Layer Protocol
The sample is a PDF document that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms and heap spraying. The critical heuristic firings indicate the presence of exploit code designed to execute arbitrary commands. The embedded file 'embedded_file_obj0010.bin' is likely the secondary payload. The ClamAV detection 'Pdf.Exploit.Dropped-81' further confirms its malicious nature.
Heuristics 9
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Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
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XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAYPDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
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ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Dropped-81
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unescape() call high PDF_UNESCAPEunescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOADPDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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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
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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
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String.fromCharCode low PDF_FROMCHARCODEString.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (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.
Extracted artifacts 7
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0008.bind81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777 |
pdf-embedded-file | PDF EmbeddedFile object 8 at offset 0xF89 | 84 bytes |
embedded_file_obj0009.bin24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0 |
pdf-embedded-file | PDF EmbeddedFile object 9 at offset 0x103A | 228 bytes |
embedded_file_obj0010.bine06df13619a664958a426ce0d60fb1a729e9924757d0922b045cecbf10d40645 |
pdf-embedded-file | PDF EmbeddedFile object 10 at offset 0x112E | 4456 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).
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embedded_file_obj0011.binc97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460 |
pdf-embedded-file | PDF EmbeddedFile object 11 at offset 0x1A3E | 199 bytes |
embedded_file_obj0012.bind5c0be04c46ac1f7d523d955a6ab8aa50363e08076e63efedca0b5538dd14672 |
pdf-embedded-file | PDF EmbeddedFile object 12 at offset 0x1B30 | 131 bytes |
embedded_file_obj0013.bine6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876 |
pdf-embedded-file | PDF EmbeddedFile object 13 at offset 0x1BF0 | 77 bytes |
embedded_file_obj0014.bin92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a |
pdf-embedded-file | PDF EmbeddedFile object 14 at offset 0x1C97 | 56 bytes |
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