PDF malware analysis — malicious · 7d058e7942dc57ec

MALICIOUS

PDF

8.2 KB Authoring application: Uomqqouame (via f9f55Perajpecisikezn)

MD5: c914c1d2509d3196fee3e8f011d986d1 SHA-1: 4f9415598620ade817898922e0472fc9fe6d9965 SHA-256: 7d058e7942dc57ec69eda3f7f35f0985397c608c195756ebfdbf624a16e0d30e

298 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

This PDF document is malicious, leveraging multiple critical vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) to execute XOR-decoded JavaScript. The embedded JavaScript, found in page_word_xor_stage_000.js, is designed to perform malicious actions, likely downloading and executing a secondary payload. The PDF's OpenAction trigger further facilitates this automated execution upon opening.

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `6d4aa1091b8ca180003b92b0f7de0a3786c917f1342f1b07e0b564971bac8681`	pdf-javascript-stream	PDF /JS object 13 at offset 0x1326	4094 bytes
`page_word_xor_stage_000.js` `4a903d0900825672b73042cc56b2dcf8eeaa6712593d2ee39bdead92325c9040`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x9A) at offset 0x405	3308 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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