PDF malware analysis — malicious · dbdcc116c4c4f162

MALICIOUS

PDF

7.3 KB

MD5: 7f8688543b3b5d01ff8d0488373de388 SHA-1: 8d6980d2cf0701b82511683dbf1cb83dfaad15d4 SHA-256: dbdcc116c4c4f1629eceb28598b37b8fca7f5a69c3a793386b5b5a17a1a76006

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript, which is a common delivery mechanism for exploits. Heuristics indicate the use of CVE-2007-5659 (Collab.collectEmailInfo), a known vulnerability in older versions of Adobe Reader. The embedded JavaScript stream, identified as 'javascript_obj0006_000.js', is likely responsible for exploiting this vulnerability to download and execute a secondary payload. The ClamAV detection further supports its 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` `9f8899cbb6299a6a4c1021a06cc920ed19fe98b7faee78e82c87dea55522f661`	pdf-javascript-stream	PDF /JS object 6 at offset 0x197	6229 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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