PDF malware analysis — malicious · fac0ff2f158bd656

MALICIOUS

PDF

6.1 KB Created: 2009-01-35 62:12:26 Authoring application: Adobe

MD5: 658c4e899ca90ebbde40e0481f20ca2a SHA-1: da84449184c90b45dd26e41d0e2881a8094d93b6 SHA-256: fac0ff2f158bd656bd0b7d9b2b69c695dfbe3ccea556e8673b8a3a78574dacf7

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file leverages multiple critical vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) to execute embedded JavaScript. The heuristics indicate that the PDF launcher concatenates and evaluates JavaScript derived from metadata fields. The presence of deobfuscated JavaScript files suggests a multi-stage execution process, typical of droppers aiming to download and execute further malicious content. The ClamAV detection as 'Pdf.Dropper.Agent-7327090-0' further supports this assessment.

Heuristics 7

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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)
ClamAV: Pdf.Dropper.Agent-7327090-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7327090-0
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `fe4898a7bb7640caa8d4da108a6d8762b0f80699b6b8780f6f3fcab9e8cccc4e`	pdf-javascript-stream	PDF /JS object 32 at offset 0x34E	272 bytes
`javascript_obj0034_001.js` `f7fbb432b489153a6a7f9128972fd1ff7b2d11b673f9322b0b72c614e19b3486`	pdf-javascript-stream	PDF /JS object 34 at offset 0x444	355 bytes
`javascript_obj0036_002.js` `112bbf41f3f345d470c7720c0e2554f6bdbb5665fc5f4dcbd9d5787299b8ea4b`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	242 bytes
`legacy_pdfkit_stage_000.js` `58e428137e7034683c38adcd5e62481706aed675b452db0650e5f8c4ed51d641`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x588	1640 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `5f585e3d073227f2aaefc706e339dcc1347cd47b1f64f7493c91277251c10f33`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB21	1806 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `771c5d2a9ff95552bf92388bf715f9acd0f4f8fb6dbae06452a8e11d3cff7bbe`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x109D	2950 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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