PDF malware analysis — malicious · fbe74acf4bf7956a

MALICIOUS

PDF

5.3 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob

MD5: 73bf4ef92c9ceb307ebd6774db272626 SHA-1: 67f040e1d2cedc54965d46b19728b3dcacfb2bca SHA-256: fbe74acf4bf7956a5b267f5cf3ef1ee36f05946ebd80fd4b3673cad5a6d2e472

156 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell T1059 Command and Scripting Interpreter

The PDF file contains an embedded JavaScript payload that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image processing. The heuristic firings indicate that the PDF uses XFA forms and contains an unescaped, embedded script payload. This payload is likely designed to download and execute a second-stage malicious artifact, as suggested by the 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic.

Heuristics 6

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Suspicious extracted artifact medium 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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_001_off00000327.js` `c5a3e78d519e84ccf0f3df15a1840c0fc0a36083e9c9e22a03d35d91aa376ad0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x327	49639 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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