PDF malware analysis — malicious · 2773fa2fc6fef7c4

MALICIOUS

PDF

6.6 KB Created: 2009-01-35 62:12:26 Authoring application: Adobe

MD5: bc39caacfbc1f8655375cb44b7152e0f SHA-1: 8726d25563c4ac3668dca4dc490345fbd03f81ef SHA-256: 2773fa2fc6fef7c4b5849db368eca45e7f143abd0f532871a9c16e1cc5bcd8fb

198 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: JavaScript

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These exploits leverage embedded JavaScript to achieve code execution. The deobfuscated JavaScript files suggest the primary intent is to download and execute further stages of malware. The file is identified as malicious with a high risk score.

Heuristics 6

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)
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `6be5e85665e93c3440ede77bc5bfa0f718a6cf5e8b4cf60f33b7b8c012befe3f`	pdf-javascript-stream	PDF /JS object 32 at offset 0x368	306 bytes
`javascript_obj0034_001.js` `e8d92067726858d11051bee0590fe2ddb419e65257385ef450821534064d501b`	pdf-javascript-stream	PDF /JS object 34 at offset 0x471	441 bytes
`javascript_obj0036_002.js` `b39290063e6a6d5d51e98e2deb3f429fdfbb2f148149fde0f75604319533118c`	pdf-javascript-stream	PDF /JS object 36 at offset 0x7C	290 bytes
`legacy_pdfkit_stage_000.js` `1bffff4fdcf3e06591fc481eda0067f58a266bad55926cd9b4fc0643cd975eb8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5C9	1664 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `60a3ebcd330ed8e2e496a7c053d2ed5fb26c06a0ce51b78fedff3e5aa602cb92`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xBE3	1824 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `91c592eac316060c3af708dc7600760eefdd7b522dde044befeb0ff79ff45af1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x11CF	2986 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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