MALICIOUS
220
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 JavaScript/JScript
T1204.002 Malicious File
The PDF file contains embedded JavaScript triggered by the OpenAction, exploiting CVE-2009-0927 and CVE-2008-2992. The JavaScript is obfuscated and uses eval(), indicating an attempt to download and execute a secondary payload. No specific family is identifiable from the available evidence.
Heuristics 7
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Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
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util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
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OpenAction trigger high PDF_OPENACTIONPDF has an /OpenAction — code runs automatically when opened
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eval() call high PDF_EVALeval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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.
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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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0009_000.jsfec7583c390fe2f5fc16629f2b75daf6e1885e118598207d44d552a02daad831 |
pdf-javascript-stream | PDF /JS object 9 at offset 0xBC | 20690 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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legacy_pdfkit_stage_000.js96f2aea0e524e647b287b8963e803a687be75b7694423b0a0c219de9bb4bfbb0 |
deobfuscated-js | split-join delimiter stripped JavaScript at offset 0x101 | 5657 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
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