PDF malware analysis — malicious · d9f959ee3805b498

MALICIOUS

PDF

6.7 KB

MD5: d808c0827018dfd973a6f36d9a0ed509 SHA-1: 75ef12ed6f625721d079361a81476036a4b69da1 SHA-256: d9f959ee3805b49845d936368785db05d2871c5c7fe0b49e8b2041f74fe48fb7

226 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF sample contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscation. Critical heuristics identify the CVE-2009-0927 vulnerability (Collab.getIcon) as being exploited. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the presence of obfuscated script streams and the known exploit. The document body, while appearing benign, is a lure for users to open the malicious PDF.

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` `c35537fd9dbdf36c12c534e10554aab161b1199f6502484573d7f6919fc4ee1e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x277	5937 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 14 long base64-like blob(s).
`javascript_obj0007_001.js` `01a33b1094cbccd2ab90e2653556f71ebda4c05ed29430a6ff34064525f58c45`	pdf-javascript-stream	PDF /JS object 7 at offset 0x277	82 bytes

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