PDF malware analysis — malicious · 51902c0351ab5e4b

MALICIOUS

PDF

2.8 KB Created: 2011-27-41 12:35:00 Authoring application: Neon PDFLib 148.112.151

MD5: 5eb3b26c6eddec12c9d61b26d3b5b8d1 SHA-1: 48c2a7998e7666285bace4655c2ada2f9d92f1aa SHA-256: 51902c0351ab5e4b3cc9764eae869118c11463a5afde128872c93e381c6adbc0

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers an OpenAction, indicating an attempt to automatically execute code upon opening. The critical CVE-2007-5659 heuristic firing, related to Collab.collectEmailInfo, strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript stream, further identified as a suspicious extracted artifact, likely contains obfuscated code designed to download and execute a second-stage payload.

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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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_obj0013_001.js` `3b8d93f6562a3c46abc569ce0beb5c49e34a300fc59fc3d089f8f9b874d16989`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	3138 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.