PDF malware analysis — malicious · 317cd34b386b3b1b

MALICIOUS

PDF

6.5 KB

MD5: faf692260f7bb46018f8dad55209b2b3 SHA-1: 28d6d255c6bc0b44e36a4ff552da220667e9e790 SHA-256: 317cd34b386b3b1b78812c63d8779d433e19c99261c15aa7ce0fe825d4f26b31

226 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

The PDF file contains embedded JavaScript that utilizes `eval()` and `unescape()` functions, indicating obfuscated code execution. The critical heuristic `CVE_2009_0927` and ClamAV detection confirm the exploitation of this specific vulnerability. The embedded JavaScript likely attempts to download and execute a secondary payload from one of the URLs found within the document, which are disguised as legitimate Adobe Flash Player download links.

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.
ClamAV: Pdf.Exploit.CVE_2009_0927-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2009_0927-1
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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` `9818408ae947801a4d6c7096af631332ab65c2570502394f6141bc5a10753a60`	pdf-javascript-stream	PDF /JS object 7 at offset 0x277	5741 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 13 long base64-like blob(s).
`javascript_obj0007_001.js` `0151e2d2ebcc1ee491d5d275dd4eadd2d26ae25a17cbc9e4b4ec97627cbac037`	pdf-javascript-stream	PDF /JS object 7 at offset 0x277	68 bytes

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