PDF malware analysis — malicious · a4ef4ec9ddcaa356

MALICIOUS

PDF

6.2 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe

MD5: 2402454a19f6e7f1aa952e4db96cdc3b SHA-1: c7039f913f8d661f5d774dccc83b164bbdbe7f1c SHA-256: a4ef4ec9ddcaa3569d7df130ac46a4b28f52c73a2d0ca37a1ccf018c3e57f8ec

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains embedded JavaScript that leverages known vulnerabilities (CVE-2009-0927 and CVE-2007-5659) to execute arbitrary code. The JavaScript is obfuscated and uses eval() and String.fromCharCode() to hide its malicious intent. The primary goal appears to be exploiting these vulnerabilities to gain control of the user's system.

Heuristics 7

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)
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. (matched inside decoded stream)
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_obj0010_000.js` `35a90c9d315562023cab87f23d3d979b7ef3c4d6168dd7cd5bfcafb70384f6fa`	pdf-javascript-stream	PDF /JS object 10 at offset 0x147D	299 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0011_001.js` `a45d3cc8bae58ead0d5ba1b5b7fd7c7839f1064b93cf47cd4d530b4738fa0dd4`	pdf-javascript-stream	PDF /JS object 11 at offset 0x158C	313 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `eb5f96188c1964a97d7234548b2a1f8e47816abd5149517a6184ea7e96464967`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1AA	4931 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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