PDF malware analysis — malicious · 44bb85d60a0450a6

MALICIOUS

PDF

4.4 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe

MD5: 00c6c9b328930d8047992d94e2da399a SHA-1: a4555f0e0c6b31288615e301e625a7950a105187 SHA-256: 44bb85d60a0450a602dc7131b306cc2593e2a88ee73dcb7f48f3f05b9f015262

358 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged through embedded JavaScript, which is further obfuscated and uses eval() calls. ClamAV detections for Pdf.Exploit.Agent-12168 and Js.Exploit.Shellcode-18 confirm the malicious nature. The primary attack vector appears to be exploiting these PDF vulnerabilities to execute arbitrary code, likely for downloading and running additional malware.

Heuristics 9

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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.Exploit.Agent-12168 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-12168
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `b33df3d1f95e473ae24d8d1d3bb8b5edec514bcfafd2467fa4041f08a8e9e58e`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC36	111 bytes
`javascript_obj0016_001.js` `0727b892efc78c34787321a6932549652d429e7939c921f9beaad8ba33422ac2`	pdf-javascript-stream	PDF /JS object 16 at offset 0xCE1	502 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0026_002.js` `52db8e2bbf79b2f14701f54af5efceb25f657a733e734c16f086a59e920445bb`	pdf-javascript-stream	PDF /JS object 26 at offset 0xE68	176 bytes
`legacy_pdfkit_stage_000.js` `9b295f4b61d00fd7bcc4a945ddc147da535b4b8db7f24da230b1b7f5580cbd53`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB	6501 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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