PDF malware analysis — malicious · 893f63654a802c4d

MALICIOUS

PDF

5.9 KB

MD5: c78f05b9e25de30d9e60fe68b5287ff3 SHA-1: eea8fc9fd88dc1291fcbf2d1e6f777f2d1ec84e0 SHA-256: 893f63654a802c4d9f12d95845d57108de5e5de5988652a4b2c1efef7e1236d0

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical vulnerability, CVE-2009-0927 (Collab.getIcon), was detected, suggesting the JavaScript is used to exploit this flaw. The embedded JavaScript stream, decoded using unescape(), likely serves to download and execute a second-stage payload, as suggested by the ClamAV detection of 'Heuristics.PDF.ObfuscatedNameObject' and the suspicious extracted JavaScript artifact.

Heuristics 6

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. (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` `126d6a010f752c6e29e881e5f313b7fa0f8302417c283146c4e7194a7657332e`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1B7	4965 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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