PDF malware analysis — malicious · d8d68688cb489507

MALICIOUS

PDF

74.8 KB Created: 2009-11-17 19:45:87 Authoring application: PDF Library 7.5.5 (via PDF Library 9.4.1)

MD5: 295b75b688070b211d1b160136cb9ed7 SHA-1: 8359e2d506a83b52a572aee726f14e47e88a1518 SHA-256: d8d68688cb489507882d4cfe2fe4a5a5e13f1cb29eb77e6b887b5981212fb414

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains multiple critical heuristic firings indicating exploitation of Adobe Acrobat vulnerabilities CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. These exploits are used to execute embedded JavaScript, which is further obfuscated and likely serves as a downloader for a second-stage payload. The file was detected by ClamAV as Pdf.Exploit.Agent-36110.

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-36110 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36110
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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_obj0007_000.js` `458f3d08524d98f0b0c1806ebe23b1c005e48be14129f02a357b85b9005be3cf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	37774 bytes
`legacy_pdfkit_stage_000.js` `c643d636b515501987c972b81f9189db0131bfaa3b3904a06a026dedbbf4ca09`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x1A5	9826 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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