MALICIOUS
266
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
The PDF file contains critical heuristic firings for CVE-2010-0188, an XFA JavaScript heap-spray exploit, and is detected by ClamAV as Pdf.Exploit.Dropped-81. The embedded file object at offset 0x112E contains exploit code that leverages the unescape() and String.fromCharCode functions. This indicates the primary purpose is to exploit a vulnerability in Adobe Reader to deliver a secondary payload.
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.bin66a8fd471c0863cb4a27455e461310cd78391000e34899866f6e68ad41a573a9 |
pdf-embedded-file | PDF EmbeddedFile object 10 at offset 0x112E | 4474 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 0x1A33 | 199 bytes |
embedded_file_obj0012.bind5c0be04c46ac1f7d523d955a6ab8aa50363e08076e63efedca0b5538dd14672 |
pdf-embedded-file | PDF EmbeddedFile object 12 at offset 0x1B25 | 131 bytes |
embedded_file_obj0013.bine6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876 |
pdf-embedded-file | PDF EmbeddedFile object 13 at offset 0x1BE5 | 77 bytes |
embedded_file_obj0014.bin92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a |
pdf-embedded-file | PDF EmbeddedFile object 14 at offset 0x1C8C | 56 bytes |
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