PDF malware analysis — malicious · c9e098a7cbc168db

MALICIOUS

PDF

4.4 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe

MD5: 42da4879eb602d1417596b724e54287f SHA-1: ccc7136044b8c47b746bf671507343d6f9e2d7b0 SHA-256: c9e098a7cbc168db0373d88fc4c1e48401735dfe9653acb88940ab36ef563378

358 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 through embedded and obfuscated JavaScript. The ClamAV detection of 'Pdf.Dropper.Agent-7303532-0' and the detection of 'Js.Exploit.Shellcode-18' on an extracted artifact further confirm its malicious nature. The primary attack pattern involves leveraging these vulnerabilities to execute arbitrary code, likely for downloading and executing a secondary payload.

Heuristics 9

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-7303532-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7303532-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `84f7da6e706d67ce9c034a7af5e4705c85524d2c98ead03481c64a70cd382056`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC5D	102 bytes
`javascript_obj0016_001.js` `6d1fbbc0ffe1748229fbed38b35a3c3b0b74e05e328b742478c22d82c4c3637f`	pdf-javascript-stream	PDF /JS object 16 at offset 0xD02	463 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0026_002.js` `92f9c8c5fc5ffab0f93209414ff06d1cf75e23186a45d8c60b71cece51765a35`	pdf-javascript-stream	PDF /JS object 26 at offset 0xE77	155 bytes
`legacy_pdfkit_stage_000.js` `2d5afce7fcd45417568baa6e6fb3448b88dad93cd32c5f8fc8edd276f6070c58`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB	6603 bytes
Detection ClamAV: Js.Exploit.Shellcode-18 Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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