PDF malware analysis — malicious · f075d64c5435c8b8

MALICIOUS

PDF

25.9 KB Created: 2010-02-17 08:34:02 Authoring application: Tarapicabopefatemc

MD5: 2d812e7d0d7fadf700d03932850609ad SHA-1: cb82e99907e48962e6cfcc0ca7e66361a2c50742 SHA-256: f075d64c5435c8b88ea0f24812f4cecf3d73781cdccbc0e0547938646301d475

238 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File T1071.001 Web Protocols

The PDF file contains multiple critical heuristic firings indicating exploitation of known CVEs (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) via XOR-decoded JavaScript. The embedded JavaScript streams, particularly 'page_word_xor_stage_000.js', are designed to be executed upon opening the PDF, likely to download and execute a second-stage payload. The obfuscation and use of specific CVEs suggest a malicious intent to compromise the user's system.

Heuristics 7

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_obj0016_000.js` `85516b841f7f3ebd75944e0145f85dd92f30c10ba4b544742e36e4c581997279`	pdf-javascript-stream	PDF /JS object 16 at offset 0x63C2	208 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`page_word_xor_stage_000.js` `b036343d671607f5e1b6af88821006be460bd872e635cf7f864d9f463b2726d1`	deobfuscated-js	page-word XOR decoded JavaScript (decompressed, key=0x66) at offset 0x300F	2228 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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