PDF malware analysis — malicious · acad638909a0de6b

MALICIOUS

PDF

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

MD5: 154e35e2e1cc449ff18243bb0626e22d SHA-1: 2adf133dd91bc24f5b687a6c000b1bd4b5230155 SHA-256: acad638909a0de6b0a573a2e292cc3e59e374f1bd0964d845d446d0c5272d63f

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript 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 exploits leverage embedded JavaScript, which is further evidenced by the presence of deobfuscated JavaScript files. The primary function of the embedded scripts appears to be the execution of further malicious code, likely a downloader for a second-stage payload, based on the nature of the exploits.

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` `15b64dc150b5c229ec6a0f2ba5a42de07b82418ed0c9b86e0342280a345c7073`	pdf-javascript-stream	PDF /JS object 32 at offset 0x342	269 bytes
`javascript_obj0034_001.js` `2e32c2fe2f02f10ad80b9828a85bb0ced8e7dbecad6259bf6db4bc5253e33fef`	pdf-javascript-stream	PDF /JS object 34 at offset 0x436	325 bytes
`javascript_obj0036_002.js` `2c091f91e2a2dc953d27904330c7d89d2691e2eb188bd73ce535413cef20c120`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	224 bytes
`legacy_pdfkit_stage_000.js` `22a6a208648dff6c065cc69c8b36dd18ce75f6c4d5faa906ccd32de67f9d364b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x574	1694 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` `0c9eb77f8a95e6adabe2102d904fd2e0b695f1892794bbc12ec0dc79d2a3e7e6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB33	1854 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` `2c778b45703aec0e461dc4e723d4e9677a9d407c1d3f906f42412dcd32eef508`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x10CE	3046 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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