PDF malware analysis — malicious · 535a2a7923daa9b9

MALICIOUS

PDF

10.0 KB

MD5: 517783e7e7042a372a38459d4bec70a0 SHA-1: dc3d37dbff1badca3bbd4821f8c402822ee630e0 SHA-256: 535a2a7923daa9b976013e0e99b618c8646fe4544c328b01725bda0d83a281de

356 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 User Execution: Malicious Link

The PDF file contains embedded JavaScript that leverages several critical vulnerabilities including CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The JavaScript is obfuscated using String.fromCharCode and eval(), and the analysis indicates it likely downloads and executes a second-stage payload. The extracted artifacts suggest a multi-stage attack designed to exploit outdated PDF reader versions.

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)
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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Suspicious extracted artifact high 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.
String.fromCharCode medium PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically
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.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0003_000.js` `6a78cd6bfc64ea1177ba70efd0543bb32f4e3e31551584295f907fc07cbbea50`	pdf-javascript-stream	PDF /JS object 3 at offset 0x25E2	191 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`info_hex_offset_stage_000.js` `8110af8a494c45029776b1a6bb5191a768dcaae5b2eb3eda83377dc9d7d2a761`	deobfuscated-js	PDF /Info subject hex-offset JavaScript (raw, offset=-65) at offset 0x14	4801 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `ccc5ec223691a78545009116365e32da3d2997344ffb9cf9d9d2b8664ef4fe82`	deobfuscated-js	PDF JavaScript deobfuscation pass	393 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.