PDF malware analysis — malicious · f17621c4cac66b6f

MALICIOUS

PDF

2.2 KB

MD5: ed68fc9c7f2856f48d73bb8f2d70680c SHA-1: be07758f18c647939d9582f686a3692cc9e0aa90 SHA-256: f17621c4cac66b6f5c3f61c0574e0a18f1393ce88603dabfa859552964725eec

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

This PDF file contains embedded JavaScript that utilizes several critical vulnerabilities: CVE_2009_0927 (Collab.getIcon), CVE_2007_5659 (Collab.collectEmailInfo), and CVE_2008_2992 (util.printf). The presence of eval() and unescape() calls within the JavaScript further indicates obfuscation and dynamic code execution. The primary intent appears to be exploiting these vulnerabilities to download and execute a secondary payload, though the specific URL or payload is not directly extractable from the provided evidence.

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. (matched in decompressed stream)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (matched in decompressed stream)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF 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. (matched in decompressed stream)
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_obj111611_000.js` `ab2410e4546af0a18002a2aa6780e302f014db7bfa97f52cc3c7ef7ab5b171f8`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x7BD	319 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`stream_000_off00000189.js` `522cb3c9169dd44eb0a07d983669f6e38b5416656f1ee79094ea05ada6989262`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x189	4728 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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