PDF malware analysis — malicious · a841c9aacb7891a6

MALICIOUS

PDF

8.4 KB Created: 2009-07-01 14:16:40

MD5: 8a08e8b414686419321917fcc3a2c210 SHA-1: ab175f1f93aca4b53ce7ca9030547719bbb84397 SHA-256: a841c9aacb7891a63679142e3a3c32c63b105ded0922f7806546d36ab011f990

378 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file exploits multiple known Adobe Reader vulnerabilities (CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) via embedded JavaScript. The JavaScript uses eval() and unescape() functions, indicating it's designed to download and execute a second-stage payload. The document body contains seemingly random text, likely a lure to trick users into opening the malicious PDF.

Heuristics 10

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)
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` `90356bca671110a3bbe747f26af9bf829e9f56b84956f19ce990d305cb513b13`	pdf-javascript-stream	PDF /JS object 7 at offset 0x666	6305 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` `1e0c8ca4c6180400afd62497a161d41969b04e1091a2d4ffa9764c7f00cf51a1`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x666	851 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 long base64-like blob(s).

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