PDF malware analysis — malicious · cfda67c7b5d4a8e3

MALICIOUS

PDF

8.2 KB Created: 2009-06-29 20:31:32

MD5: 590c80d3519efd0d4cde77b95c5b694b SHA-1: bcaf999d8327c1d7699d4c59c9c2c993ccb4b694 SHA-256: cfda67c7b5d4a8e3d1f8719bb39c4d6b74d7c022958f276360e94d18c5375855

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file exploits CVE-2009-0927 and CVE-2007-5659, as indicated by critical heuristic firings related to `Collab.getIcon` and `Collab.collectEmailInfo`. The embedded JavaScript, which uses `eval()` and `unescape()` functions, is heavily obfuscated but likely serves to download and execute a secondary payload. The ClamAV detection `Pdf.Exploit.Agent-35649` further confirms its malicious nature.

Heuristics 8

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
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` `3ff8e21380a46e861250a315fe51b7d9ca46db3c25df3d9bb8dbe78ecdc7abaf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x518	6402 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 0x518	567 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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