PDF malware analysis — malicious · b6f7ae5f9e064d1a

MALICIOUS

PDF

6.7 KB

MD5: ff6a687f94f66f05aeb3ae29e42adbd5 SHA-1: c47a632f24292e1f17d3daf8afad21d3fffdb144 SHA-256: b6f7ae5f9e064d1a8c4c328e4bad667e36f8c5b80b3d3a82924fdc68b0ee5b38

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2007-5659) related to the 'Collab.collectEmailInfo' function. Static triage also flagged suspicious JavaScript obfuscation and an extracted JavaScript file. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although its exact function is obscured. The presence of these indicators strongly suggests a malicious intent, likely to exploit the user or system.

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)
Suspicious extracted artifact high 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `07544562d2f6eb9d43375e61f9d4577c139a7018b7273e822962dd8b70462198`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19F	5628 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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