PDF malware analysis — malicious · b851dbdd082bef28

MALICIOUS

PDF

10.6 KB Created: 2009-06-05 00:16:18 Authoring application: Ziyunecesexoqawevi

MD5: f49afb760c6abe713d4c780bad521e2d SHA-1: 3605fcba8b6f43e00314cba626636f37907189a5 SHA-256: b851dbdd082bef28bea6304554b099f96bdbbb0a8b11fab5f33d055c648b4800

318 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link T1204.002 Malicious File

This PDF file exploits CVE-2009-0927 and CVE-2007-5659 vulnerabilities, as indicated by the critical heuristic firings. It contains embedded JavaScript that is obfuscated and uses eval() and unescape() functions, typical of exploit kits. The primary intent appears to be the execution of malicious code upon opening the document, likely leading to a second-stage download or exploit.

Heuristics 9

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)
ClamAV: Pdf.Exploit.Agent-35649 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35649
OpenAction trigger high PDF_OPENACTION

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

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `1a15e1a5a625cf4209381ec75e0e13ef85b8f136fc41874813d2a69e010d2ef4`	pdf-javascript-stream	PDF /JS object 7 at offset 0x39F	9236 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `9c33c9ab64bb3440b9f04b04907f8b138b976c1946b92e723714f7519c8d4a17`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x39F	567 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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