PDF malware analysis — malicious · f5daa2574457da48

MALICIOUS

PDF

34.3 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)

MD5: ef5c676f9e1a51318c76dabeaa7948f1 SHA-1: 24e6d59be5a36cb167331571ab1b8b2be4bed37d SHA-256: f5daa2574457da48b564cd9a75c28fa0ef3ea285c20561426e4535255282d3fc

288 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF document is malicious, leveraging multiple critical vulnerabilities (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) related to JavaScript execution within Adobe Reader. The 'OpenAction' trigger and 'eval()' calls indicate that embedded JavaScript is being executed upon opening the document. The JavaScript is heavily obfuscated using numeric character codes and string concatenation, but the core functionality appears to be exploiting these CVEs to likely download and execute a secondary payload. No specific malware family could be confidently identified.

Heuristics 9

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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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_obj0007_000.js` `003f3e566a4acb2a68c7303ad3f4c5a4293568250ccb3b1de744e9cb36c2fbc9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x200	34001 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `4f384a60a8cf454db6d25011f019d90f620d9ed6b4727340290123425e5e51b6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x200	33359 bytes
`numeric_charcode_stage_000.js` `aa5e361bc447980eaeecff0324d8d8a809e4f3b2275c729488d60b33ef20c088`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x207	7882 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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