PDF malware analysis — malicious · 7a0fe29a94e0480f

MALICIOUS

PDF

3.5 KB

MD5: 9ea7091017c3decc653a79f6e2409f3b SHA-1: fc21e993c3d8afd4536bbd5d048baac43ac11bb7 SHA-256: 7a0fe29a94e0480f8e334ec905d0a21f37bf44f2d098b5c60cd28059ea6b2530

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscation. Critical heuristics identify exploitation of CVE-2009-0927 (Collab.getIcon) and CVE-2007-5659 (Collab.collectEmailInfo). These vulnerabilities are used to execute the deobfuscated JavaScript, which is likely responsible for downloading and executing a secondary payload. The ClamAV detection of Pdf.Dropper.Agent-7275188-0 further supports its malicious nature as a dropper.

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.Dropper.Agent-7275188-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7275188-0
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_obj0004_000.js` `5341a9d90e32db606c2ebb777184b5d2e9b86a1d031333e329f1f7a5e669f46f`	pdf-javascript-stream	PDF /JS object 4 at offset 0x249	29356 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`numeric_charcode_stage_000.js` `e1771ac7da04e708d37298fffa971296720a5f41daf22e8fb1e0c96c59ade78b`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x2B2	6605 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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