PDF malware analysis — malicious · a7dc9c7c17e4cf26

MALICIOUS

PDF

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

MD5: 2a39241a34cd917ede3961b1daf34582 SHA-1: 7a7f151bf74a943e55d9f4a1cb7a0fba3e43073e SHA-256: a7dc9c7c17e4cf26cc2f0e673a8d65322d92adaf6bb96f5e2d1ec3a8b71b5c10

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF document is malicious, leveraging multiple critical vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) through embedded and obfuscated JavaScript. The JavaScript utilizes `eval()` and exploits specific PDF functions like `media.newPlayer`, `Collab.getIcon`, and `Collab.collectEmailInfo` to achieve arbitrary code execution. The primary intent appears to be downloading and executing a secondary payload, as indicated by the deobfuscated JavaScript and heuristic analysis.

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)
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` `82c6d01c4ee88f74aba89dacfe0c3f31570f2f0456ddc0fe8af4d1adcb676541`	pdf-javascript-stream	PDF /JS object 6 at offset 0xBFC	102 bytes
`javascript_obj0016_001.js` `a49e26a65f0b68b0f11afd54e62ae00ef071854895367e5d46e97310d9c7c113`	pdf-javascript-stream	PDF /JS object 16 at offset 0xCA1	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` `528ef9d631acc6a38e6f9d1f1f16d62b1ae7b002f2ce66ed90435ecb0e2b3cbd`	pdf-javascript-stream	PDF /JS object 26 at offset 0xE18	155 bytes
`legacy_pdfkit_stage_000.js` `10ea963ecd9f26b09fdfb4fb4a2555b9b0d1bceddc438369d084dffefd0809b1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB	6411 bytes
Detection ClamAV: No threats found 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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