PDF malware analysis — malicious · c710f4817e3a1305

MALICIOUS

PDF

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

MD5: e1abe35cefc6af15dad3d1f58310e5b0 SHA-1: 5b3888be1fa175de916fe6d7f5baac0fb65864f7 SHA-256: c710f4817e3a1305ba51da5c6f17d72ca2e9c1a3f494d1c3f5748ccfbfcfbc56

280 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: JavaScript T1059.007 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 vulnerabilities are leveraged through embedded JavaScript, which is obfuscated and uses eval() and unescape() functions. The script's likely intent is to download and execute a second-stage payload, exploiting the user's interaction with the PDF. The document body is heavily corrupted and unreadable, providing no further context.

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `aa02d2331ff27087f14778aae73f19b79f78f42b43662e31700131454309f728`	pdf-javascript-stream	PDF /JS object 32 at offset 0x41A	130 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `c0b530ff4c84c0ecc48886d53271135a879edd9079dda27f61a7fe1aed626fcf`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4D6	127 bytes
`javascript_obj0036_002.js` `71503ed251dd20a4af56bf9cd456b41d26c3a5fff12f99dfa0dc44f03e8dda06`	pdf-javascript-stream	PDF /JS object 36 at offset 0x101	138 bytes
`javascript_obj0038_003.js` `af89a7363f43d60178f6b90fb0e2ba4fe553b4bf3b882d3f331d59175ab437aa`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC37	162 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `092cfe2556ffb1e1d05bce2b80a632eae60f0f3893e9485c21f3e7993073aa18`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	39 bytes
`legacy_pdfkit_stage_000.js` `4bfab9c7aeb2d1b56208d739fbd66451049e7eb653265ad0b82666365470a237`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5C4	1634 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` `66b79b933cf20347f19901a4f546d45326ce2cf0cf3c2d93d462e0a1e373f498`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD64	1800 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` `3fac435156b99c277dbdcab17a0b65e161e4a4dd7935f625669579094651a4b3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x13CF	2938 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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