PDF malware analysis — malicious · f54132b855fb74f0

MALICIOUS

PDF

27.5 KB Created: 2009-05-14 11:21:00 Authoring application: cb5tHcfHZyG1Y5 (via TqKOWzUHo7)

MD5: 16ab285c28e6a08542db647a6bc87f14 SHA-1: 154055d7beb6f8e9cafd65c6d5b8427bdedc9309 SHA-256: f54132b855fb74f0a56f3ae387dfe9e150c450b48a3860188fa4ea181eb42b4b

276 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

This PDF exploits multiple Adobe Reader vulnerabilities (CVE-2007-5659 and CVE-2008-2992) through embedded JavaScript. The JavaScript is heavily obfuscated using numeric array division and String.fromCharCode, and ultimately uses eval() to execute the exploit stage. The primary goal appears to be arbitrary code execution within the context of Adobe Reader.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 8

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)
Multi-CVE Adobe Reader JavaScript exploit kit critical PDF_ADOBE_READER_MULTI_CVE_JS_KIT

One recovered JavaScript stage contains multiple version-gated Adobe Reader exploit branches. This is stronger evidence than independent API keywords: the PDF is selecting old Reader vulnerabilities by viewer version and running heap-sprayed Acrobat JavaScript exploit paths.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `5db610f23cc56e1edcf9fd7c2cbe0c930f64e3502501aecc4166124e98068816`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23E	26947 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`numeric_array_division_stage_000.js` `f2937326cdce700138c78ad8c6404bb3b62e24e6b0cb0fcf04a350eb65fdb2ac`	deobfuscated-js	numeric array division decoded JavaScript at offset 0x25D	5336 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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