PDF malware analysis — malicious · 8eabb8b9efd99e0a

MALICIOUS

PDF

4.1 KB Created: 2009-06-24 18:33:30 Authoring application: Adobe (via UltraEdit)

MD5: eecaf5fb89f1c8b174ee3a185169352f SHA-1: d614dd724cd9cc66513b0a20263163fbf8ba8805 SHA-256: 8eabb8b9efd99e0a3b985734c2640a35e6ce9e0ddb4763ab42064cf319a110f6

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages known vulnerabilities, specifically CVE-2009-0927 (Collab.getIcon) and CVE-2007-5659 (Collab.collectEmailInfo). The JavaScript is obfuscated using `unescape()` and `eval()` and is designed to be executed when the PDF is opened. The ClamAV detection of 'Pdf.Dropper.Agent-7281873-0' and the presence of deobfuscated JavaScript further indicate a dropper functionality, likely intended to download and execute additional malicious content.

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: Pdf.Dropper.Agent-7281873-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7281873-0
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_obj0006_000.js` `18e2ce4b27e419b779c7cb6008637b892ae11391fa69b28ac1a0e12c4fb0e8e4`	pdf-javascript-stream	PDF /JS object 6 at offset 0xD71	226 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `ea2eca76e8650b4f51fe4aeead5b5c0a29dbf2dc46fa10def9251dd5560658f1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x18B	5262 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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