PDF malware analysis — malicious · b6793af9491b5e86

MALICIOUS

PDF

1.3 KB

MD5: 0adfb51aa465bfe077adfa52d1aef6f9 SHA-1: baa24791b09fe2a615d9ec697c098a446b7ec3da SHA-256: b6793af9491b5e86559a64b3ab888b82ecfe2231e1bbf93f0fca16e9b7d06fff

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript triggered by an OpenAction, exploiting CVE-2009-0927 via a Collab.getIcon call. The embedded JavaScript stream, identified as 'javascript_obj0009_000.js', is heavily obfuscated but is indicative of a dropper mechanism. ClamAV detections further confirm its malicious nature as a PDF dropper and exploit.

Heuristics 8

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: Pdf.Dropper.Agent-7216711-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7216711-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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)
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_obj0009_000.js` `40230a9ef38e574cb4b86c2095e43fab3dfa1ca68b58c47838fc10678c09a0d5`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	3159 bytes
Detection ClamAV: Pdf.Exploit.Agent-35646 Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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