PDF malware analysis — malicious · 2118db9b7bdef6d2

MALICIOUS

PDF

3.5 KB

MD5: 999d6e21bd1734aede2accd5fc01ee08 SHA-1: 7c05412c6d3d99cfc76d76f3e7de6cf15c088fc0 SHA-256: 2118db9b7bdef6d26e05088cbda23b64aa8d3f5949b76ab0ee8ad2eee81993f3

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

This PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_EVAL, PDF_UNESCAPE, and specific CVE detections for CVE-2009-0927 and CVE-2007-5659. The embedded JavaScript is likely designed to exploit these vulnerabilities to download and execute a secondary payload. The file's structure and the nature of the detected exploits suggest a downloader or dropper functionality.

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` `50a47789d339f34c9030130b77f262f0ba410f6abdcd44a0bdfbcc84fcbef649`	pdf-javascript-stream	PDF /JS object 4 at offset 0x249	29405 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` `6302499bcfa267a36a516bf17e1dfbace1d8a211833895a5c89e2f02b0974023`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x2B2	6605 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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