PDF malware analysis — malicious · 952d26d235c3c878

MALICIOUS

PDF

2.9 KB Created: 2010-02-01 04:58:01 Authoring application: a7c9e3

MD5: b17004243f6bdce12a7b3823bb4f4947 SHA-1: 9801c4483c5900cacbeb9831364f850c9d00314d SHA-256: 952d26d235c3c878ba9cfc27bc685e43286bf566de1999d770530afadfb0d5e0

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities including CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. The heuristics indicate that the JavaScript is obfuscated and is likely used to download and execute a second-stage payload, as suggested by the ClamAV detection of 'Pdf.Dropper.Agent-7284168-0'. The extracted artifact 'legacy_pdfkit_stage_000.js' further supports this. The attack pattern involves leveraging these vulnerabilities to achieve arbitrary code execution.

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-7284168-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7284168-0
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0028_000.js` `ada65737dbe0720a05c623dd3e74e95402ad0555561f125cd454d8c182cb4b50`	pdf-javascript-stream	PDF /JS object 28 at offset 0x216	281 bytes
`legacy_pdfkit_stage_000.js` `8e98738cae7a24166838f74fe3edc5bd6a4deb6d1b85bfacd5299e83e339262d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x356	2591 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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