PDF malware analysis — malicious · 33a9ce3705327cde

MALICIOUS

PDF

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

MD5: ea966a8febddd526b71d88f24cb1632e SHA-1: b12c0e84c1dad81e744be42579d224cf43d4a3a4 SHA-256: 33a9ce3705327cde9a6785329c5943a55ce7b595da82346caaecd58d31c0d1c8

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell T1204.002 Malicious Link/URL

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 obfuscated using eval() and unescape() calls. The primary intent appears to be the execution of arbitrary code via these exploits, likely leading to a second-stage download or further compromise.

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)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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` `29c42e175a66272faee8b4e921f8a0f5cc81aacff43ba21aeba94ae41a8cbda5`	pdf-javascript-stream	PDF /JS object 6 at offset 0xCB5	59 bytes
`javascript_obj0016_001.js` `d81958cb14f3fe4b74fb1c1a9eb6b6d29bb2e1f0e617f023169be6a773575fdb`	pdf-javascript-stream	PDF /JS object 16 at offset 0xD40	135 bytes
`javascript_obj0026_002.js` `30439b6e1eef14d16582940e17a06cf57a4d10a6eb05968af29c2845092822d4`	pdf-javascript-stream	PDF /JS object 26 at offset 0xE0E	47 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` `3c967e980e49410f6d3ca1ea469b9efd6ebc435fe0e9efb6fc6a419d13e3428d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x23B	6502 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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