PDF malware analysis — malicious · 3e1c34b60443b380

MALICIOUS

PDF

8.4 KB Created: 2009-07-06 16:21:05 Authoring application: Leguavbotazi (via Lajimonejvjizapoo)

MD5: adcb332f6768783685b2c54f49072abf SHA-1: 209b50312bba623c6d51857d8501acf8a1959756 SHA-256: 3e1c34b60443b3806903a6376136a0ad67338d5975d515534d1e979f68add5e7

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that triggers the CVE-2009-0927 vulnerability using the Collab.getIcon API. This exploit is designed to download and execute a second-stage payload, as indicated by the 'eval()' and 'unescape()' calls within the JavaScript. The presence of 'Pdf.Exploit.Agent-35649' from ClamAV further confirms its malicious nature. The extracted artifacts 'javascript_obj0007_000.js' and 'legacy_pdfkit_stage_000.js' are likely components of this exploit chain.

Heuristics 8

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF 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)
ClamAV: Pdf.Exploit.Agent-35649 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35649
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One 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_obj0007_000.js` `b5900a1fdebc5dae37690e1fb5787269838b19cb47b6ed90bf27e238726a582b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x608	6331 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `e02e2a3bae5c73bf215cd72464cd0cd24899c02b4725be7065c7303db8f7b64c`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x608	276 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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