PDF malware analysis — malicious · ed4efde7483de3d2

MALICIOUS

PDF

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

MD5: 64c2be467d5c6d09f8570a8c01ace6ec SHA-1: cc49e1e45e19c562562b237abc43444229a1f651 SHA-256: ed4efde7483de3d2d5bef5c85bd0cddec08f7fbca0c324ed5d187f3f1ee2ad75

258 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged through embedded JavaScript, which is further deobfuscated into multiple stages. The ClamAV detection of 'Pdf.Dropper.Agent-7320945-0' strongly suggests this PDF acts as a dropper for further malicious content. The deobfuscated JavaScript streams are likely responsible for downloading and executing a second-stage payload.

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-7320945-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7320945-0
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` `7c70fdbabcf974afa9ecc61d3f707534f548f251762696b98fb2f498abd9fa36`	pdf-javascript-stream	PDF /JS object 32 at offset 0x2E9	235 bytes
`javascript_obj0034_001.js` `2abb7c0822efdd62ebeb1e83ad0c503e1d11c5434e267c458a255f81b99f26be`	pdf-javascript-stream	PDF /JS object 34 at offset 0x3CE	307 bytes
`javascript_obj0036_002.js` `35e564bb8c89ccb8361ae2cc14547a3bdc9a74fd6b786420ae5b9d5797285ce8`	pdf-javascript-stream	PDF /JS object 36 at offset 0xAC	166 bytes
`legacy_pdfkit_stage_000.js` `73da873531a4746bb19470afff326f821fcbb280b91605764cc793b16d853ba5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x4F8	1657 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` `a6ae0ecba3e216f4ba31a010622497210977477d40a49a010cfb2698fec3e9a4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xA8E	1809 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` `5bf3a7a59c2bde72baaf2a76e9e294afa36a2afa273a1e6df252251981fd8b95`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1001	2967 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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