PDF malware analysis — malicious · 89b2da65acd8901d

MALICIOUS

PDF

6.8 KB

MD5: af022f91678fd325962883f668fefee0 SHA-1: 6ed0da8af31d0855f6b9841088dd713cfdc3a838 SHA-256: 89b2da65acd8901da7fc9ec69a03f0036b87a46fb23e956cbac2523595bd0272

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2007-5659 (Collab.collectEmailInfo). This indicates the document is designed to exploit this vulnerability to run arbitrary code. The presence of an embedded JavaScript object further supports this, suggesting it's used to download and execute a secondary payload. The ClamAV detection confirms the malicious nature.

Heuristics 6

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. (matched in decompressed stream)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `6c58fdc5170f3a34d1c548bbebce36158209bb8dfbf86c32351d19dd5d3eeb6a`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A7	5822 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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