PDF malware analysis — malicious · f1c5ed743a6ae967

MALICIOUS

PDF

12.0 KB Created: 2009-11-25 19:49:75 Authoring application: PDF Library 10.7.1 (via PDF Library 7.6.3)

MD5: 21be4c8556bc10dfc7beaa2d77179711 SHA-1: 083968015d0ce987f39f30eaa0cfad4422029b99 SHA-256: f1c5ed743a6ae967db0a2f4c2e288e42657cd2b3f883b4ea98e295154049d789

220 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that leverages multiple critical vulnerabilities in Adobe Acrobat (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992). The JavaScript is obfuscated and appears to be designed to download and execute a secondary payload. The presence of these specific CVEs strongly indicates an exploit kit 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` `86af86e99ed8253dde6dfe109fa8dc74cf4a6fde189cd8c12e2be999ae3ecfa8`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	38044 bytes
`legacy_pdfkit_stage_000.js` `d3b420fce564fa868d230ed7b49dfbd015aeb7a7fe05fbbd836f0425f4ac78af`	deobfuscated-js	numeric array subtract-key decoded JavaScript at offset 0x268	9868 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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