PDF malware analysis — malicious · 96fc7cae5c4da5b5

MALICIOUS

PDF

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

MD5: 58d42334ce6485593d88b43ea93d9d68 SHA-1: b2533244b1a93b2fe3fc54501c199038167bda51 SHA-256: 96fc7cae5c4da5b54c0a485f48110b2e0b86395e678caf3167f2b7e62d9b5708

246 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF document contains multiple critical heuristic firings indicating the exploitation of known PDF vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659). These vulnerabilities are leveraged to execute embedded JavaScript, which is further obfuscated and uses eval() calls. The primary intent appears to be the execution of malicious JavaScript, likely to download and execute a second-stage payload. No specific family could be identified due to the generic nature of the exploit.

Heuristics 8

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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0014_000.js` `8492316b5ad8a44f1d5f560374771c16d9ee28c0671afe631e54328ae0cf7180`	pdf-javascript-stream	PDF /JS object 14 at offset 0x1725	298 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0015_001.js` `2d2c1bd3cf8ab966015b137c74bb9e9c04b38ea80d62e2816e55b6e6d7f0a4d2`	pdf-javascript-stream	PDF /JS object 15 at offset 0x1834	305 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0016_002.js` `592806f5e904e3d7c229ed539b84e6d67fee35294bc550e1b22bcc85b34fd429`	pdf-javascript-stream	PDF /JS object 16 at offset 0x1947	315 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0017_003.js` `96d6ba766191b6853e1dd32a19764ac7b7e0fb406ed173284cf79803bd813563`	pdf-javascript-stream	PDF /JS object 17 at offset 0x1A63	308 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0018_004.js` `2e20bf548831152792cd45e31abd0f0ca4112254ac64643c77eb3e29e65843d6`	pdf-javascript-stream	PDF /JS object 18 at offset 0x1B79	299 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `cd6202bed07aae3ee9a51830674121c45dd42566cc5df4698764f7893d853110`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1D2	2938 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).
`legacy_pdfkit_stage_001.js` `e9c7435c197b82dffbd5381ed31a475d387a8671690273b845f4c1d4ebeb36e4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x961	1634 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` `73beae69d19d420bd381f184dda2bde25943daac4b29f9d6e28a00b74d42bad7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xFCE	1800 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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