PDF malware analysis — malicious · afd44509ba31919a

MALICIOUS

PDF

8.9 KB Created: 2009-11-09 19:43:74 Authoring application: PDF Library 3.1.4 (via PDF Library 6.6.6)

MD5: 2a7c9ad56b3e5e774113cc02d49622a0 SHA-1: a249174d64d18d58aa754bb03408b3e67de43bda SHA-256: afd44509ba31919a4b3f115fbe6cd5e5b527b72aaa7631d4475bf7238759a0ee

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF exploits multiple known vulnerabilities including CVE-2009-0927, CVE-2007-5659, and CVE-2008-2992. These exploits are used to execute embedded and obfuscated JavaScript, which likely downloads and executes a second-stage payload. The specific vulnerabilities targeted suggest a PDF exploit kit was used.

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` `7e4f29531348f5573307673067beb5519ca2ca5b6d6879412c3def83d0b63218`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37548 bytes
`legacy_pdfkit_stage_000.js` `3193c11037ad4dfc32fb09cf74022b2fb89739cb9966cc5b72faafbbf393e475`	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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