PDF malware analysis — malicious · 7a6ed93ec825f467

MALICIOUS

PDF

16.9 KB Created: 2010-01-01 07:27:45 Authoring application: Fexaxououazobb

MD5: fe85879ec2a492aca52094a51a1e7712 SHA-1: 283e8102b331201f1f023b31d50cadfc4227aca2 SHA-256: 7a6ed93ec825f467a1663f7e435ba7a5ff7f0fc8eedbd1ae714bb61f30b989dd

298 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged to execute embedded JavaScript. The extracted JavaScript streams, particularly 'legacy_pdfkit_stage_000.js', are heavily obfuscated but ClamAV detected them as 'Js.Exploit.Shellcode-18', suggesting they are designed to download and execute a second-stage payload. The PRC/3D content also indicates a potential exploit vector.

Heuristics 8

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)
PRC/3D content in PDF high CVE related PDF_PRC_3D

PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
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.
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `b75917f1c0df655e0279c57d89ee2cf154604e2026abe4657dc2bef4c7de337a`	pdf-javascript-stream	PDF /JS object 12 at offset 0x409	858 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0028_001.js` `073f901378409708ba21524edbf92f2395b96d35ec756f128dbc42401733d7df`	pdf-javascript-stream	PDF /JS object 28 at offset 0x1B9	1091 bytes
`legacy_pdfkit_stage_000.js` `8fa97cc4b211ca731dad7de56e00b91063928796009c1b4ae76003d6bfa78831`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x62F	31242 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 95 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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