PDF malware analysis — malicious · d367535ded86dde9

MALICIOUS

PDF

5.8 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)

MD5: d690c5b332f2a5aa3e1fb15eb0209e5f SHA-1: d231bbd31066618b3752ddf60a3594a36828fbae SHA-256: d367535ded86dde9a2a6d03a982b98265d1eafe7ac54e6489ee460cf12e9005c

358 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains multiple critical heuristic firings indicating exploits for CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992, all related to Adobe Reader JavaScript vulnerabilities. The presence of embedded JavaScript, including deobfuscated stages, strongly suggests the execution of malicious code. ClamAV detections further confirm its malicious nature, identifying it as Pdf.Exploit.Agent-35931 and an extracted JavaScript exploit. The primary attack vector appears to be leveraging these known PDF vulnerabilities to run embedded scripts, likely to download and execute further stages.

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)
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: Pdf.Exploit.Agent-35931 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35931
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
JavaScript action low 1 related finding 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `f20b95413386684defb9cf7846920ebbd5d831eeb0328cb75d5b4cb01d63e333`	pdf-javascript-stream	PDF /JS object 6 at offset 0x134A	1006 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` `2589e72f0922d05e81f24a0bf4af712e63d74a0ef804ee5c50e8fd90f9bd85dd`	deobfuscated-js	metadata placeholder percent-decoded JavaScript at offset 0x16E	4899 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 9 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `00d3ec8a284d5f9415e827e2a5a9750032a425d5549c0713f397880924900273`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x16E	4895 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 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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