PDF malware analysis — malicious · 409b2d518954ab70

MALICIOUS

PDF

2.3 KB

MD5: 5c3b5cc9e4b3850bcc8ab5827e10f7d5 SHA-1: ed21af0944b9e0ddb488f4b9482d1bf6c7acdfe5 SHA-256: 409b2d518954ab700251aa98c4a957ce8e98729af9439eb337520df9cce94628

238 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 User Execution: Malicious Link T1204.002 User Execution: Malicious File

This PDF document exploits CVE-2009-0927 and CVE-2008-2992 vulnerabilities to execute embedded JavaScript. The JavaScript is obfuscated and uses eval() calls, indicating an attempt to download and execute a second-stage payload. The ClamAV detection of 'Pdf.Exploit.Agent-35646' further supports the malicious nature of the embedded content.

Heuristics 7

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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_obj0009_000.js` `1f4506a465df6aff88cb4ea47df964916ddc795fb382129dc2da17f2a445f382`	pdf-javascript-stream	PDF /JS object 9 at offset 0xBC	20476 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `d1914362e3c3d7523fbc72f11665e7f1347582ba294ea699a62dd4004a56f738`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0x103	5605 bytes
Detection ClamAV: Pdf.Exploit.Agent-35646 Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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