PDF malware analysis — malicious · a98d6536e48b7f20

MALICIOUS

PDF

2.3 KB

MD5: 2b1fc3332d8cc6d955bd6dc8143f5f83 SHA-1: 763ca1412e24bdffc3cd95dae4a6b68d2d412c94 SHA-256: a98d6536e48b7f205d3a3f7a5a9e558e22e1ca298c643e557eeca6b0879a969e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical finding is the CVE-2007-5659 exploit targeting the Collab.collectEmailInfo method, which is known to be used for arbitrary code execution. The embedded JavaScript, although partially obfuscated, likely serves to download and execute a second-stage payload. The DOC BODY excerpt provides context suggesting a potential scam or phishing lure, though the exact nature is unclear without further analysis of the script's behavior.

Heuristics 5

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `784416777771db89cc8417bced2eff26c15ec0218c7da7de2319c5f68665e642`	pdf-javascript-stream	PDF /JS object 7 at offset 0x2A5	1369 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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