PDF malware analysis — malicious · dc0d6f712c4a55d9

MALICIOUS

PDF

8.9 KB Created: 2009-11-08 19:49:18 Authoring application: PDF Library 6.7.8 (via PDF Library 7.1.6)

MD5: 21bf5e371be8d365d517ea73bc1913f2 SHA-1: 1c5d7903f26f2769d55ac72c4a2396f761621b4f SHA-256: dc0d6f712c4a55d9245e647150d3a74499d133ef9c471b31d5cb551b78c079d0

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious Link

This PDF file is malicious, leveraging multiple critical vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. The embedded JavaScript, identified as legacy_pdfkit_stage_000.js, is obfuscated and likely responsible for downloading and executing a secondary payload. The use of multiple exploit triggers suggests a sophisticated delivery mechanism.

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)
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)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `3f33e8a970be478051d767d55e2fbbfabb5b44ecfa0288f2370caca21765ee7b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	38183 bytes
`legacy_pdfkit_stage_000.js` `4c3eb26472ec6f4702326bc846679c50ad90527b75174ab83090aae611ddb430`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x268	9874 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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