PDF malware analysis — malicious · 38543ca81af7ce4f

MALICIOUS

PDF

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

MD5: f58effdfbe593421e50bef9ef7d9c1eb SHA-1: 77b268609f247a3f6a6dc983c6277a0ccd7ffe08 SHA-256: 38543ca81af7ce4fb065037e6eb587f9e2cf18a85c64fd1e050fc349906fe43a

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file exploits multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) to execute embedded JavaScript. The extracted JavaScript files indicate a multi-stage process, with the initial PDF acting as a loader. The primary intent appears to be downloading and executing a second-stage payload from a remote source, facilitated by the exploitation of these PDF vulnerabilities.

Heuristics 6

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)
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` `3c66e8538411e1176a01965efb93c4d0a3868ea209e3cc7fb7daa7124864d8a4`	pdf-javascript-stream	PDF /JS object 32 at offset 0x382	312 bytes
`javascript_obj0034_001.js` `5abb957341ceddd7f3eb168bda4ec0629e93060cb6fb26979b65bf012a4d933a`	pdf-javascript-stream	PDF /JS object 34 at offset 0x494	501 bytes
`javascript_obj0036_002.js` `8097e6bd32657bbc52b5d51db912efcee3e9b8e588ede0e0e20910f0d8a04a03`	pdf-javascript-stream	PDF /JS object 36 at offset 0x7C	326 bytes
`legacy_pdfkit_stage_000.js` `1bffff4fdcf3e06591fc481eda0067f58a266bad55926cd9b4fc0643cd975eb8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5F8	1664 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` `60a3ebcd330ed8e2e496a7c053d2ed5fb26c06a0ce51b78fedff3e5aa602cb92`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xC12	1824 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` `91c592eac316060c3af708dc7600760eefdd7b522dde044befeb0ff79ff45af1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x11FE	2986 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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