PDF malware analysis — malicious · 4a16eebf0e4b9eef

MALICIOUS

PDF

3.4 KB

MD5: ada93d3f4b596107f4d96b82b1b34e6c SHA-1: 98a3159f387b321a2b1c618a2b2e1546b9c9cbc1 SHA-256: 4a16eebf0e4b9eefda343025df141114f26efce0c26e9745f3c08baff9eff2f8

296 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file exploits known vulnerabilities (CVE-2009-0927 and CVE-2007-5659) to run embedded JavaScript. The JavaScript is heavily obfuscated using eval() and unescape() functions, and further deobfuscated into a second stage. The primary intent appears to be the execution of a second-stage payload, as indicated by the ClamAV detection of 'Pdf.Dropper.Agent-7212055-0'. The obfuscation techniques and use of known exploits suggest a dropper functionality.

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-7212055-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7212055-0
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)
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0004_000.js` `5057381f9c3d0ab3e397cd0373575a9f371d78e71cbdd6ae2de71a2789c84f73`	pdf-javascript-stream	PDF /JS object 4 at offset 0x249	23157 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).
`numeric_charcode_stage_000.js` `77bd6e4d96ee4e5590bece618ffe85f8a29050f978a7d22ebd4317159f204184`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x3F2	6767 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.