PDF malware analysis — malicious · 296e0d3d352bcf0c

MALICIOUS

PDF

3.5 KB

MD5: d13eb8c16ee1c32ef1a2f70812db90b3 SHA-1: a1ace82cecf9ffbef58c78eecec6cf6d7a3058a3 SHA-256: 296e0d3d352bcf0c570ad45ccc6cea3172067cbaa48a1e551c3e023767528e05

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.001 Malicious Link/URL T1190 Exploit Public-Facing Application

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_EVAL, PDF_UNESCAPE, and specific CVE exploits (CVE-2009-0927, CVE-2007-5659). The embedded JavaScript streams, particularly 'numeric_charcode_stage_000.js', are likely responsible for executing the exploit and potentially downloading further malicious content. The ClamAV detection further supports the malicious nature of the file.

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)
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. (identified after JavaScript deobfuscation)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0004_000.js` `68fc6f63b77c7f3dc1d46453821b3361d18212ff69247e193bfe805b4646c6bb`	pdf-javascript-stream	PDF /JS object 4 at offset 0x249	29586 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`numeric_charcode_stage_000.js` `440443c922067cb93af8f942a5f4a8138ba40b1ad9ddb6a38fad6ed31b1d9370`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x2B2	6659 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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