PDF malware analysis — malicious · 491b169a77d4442a

MALICIOUS

PDF

5.3 KB

MD5: 1187739b1b43d6425af63abb129910a2 SHA-1: 1c3f969fae5d8deada5460acfaa9fc7f709e1b85 SHA-256: 491b169a77d4442a52342ebfa35361e030a1dce43ee6c1e37c2a0b257dbe2f51

218 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059 Command and Scripting Interpreter

The sample is a PDF document that exploits the CVE-2010-0188 vulnerability in Adobe Reader. This is indicated by multiple critical heuristic firings, including 'CVE_2010_0188' and 'CLAMAV_DETECTION' with the same CVE identifier. An embedded file, 'embedded_file_obj0006.bin', was also extracted, which likely contains the malicious payload. The document body is heavily obfuscated and does not provide direct clues to the attack's intent beyond the exploit itself.

Heuristics 7

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.
ClamAV: Pdf.Exploit.CVE_2010_0188-10 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
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.
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.
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
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
`embedded_file_obj0006.bin` `8bb12c7dc54b38984a93d0c4ca46a96e25fd797e44ecd5c45164c2f6b631aa52`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x411	30822 bytes
Detection ClamAV: Pdf.Exploit.CVE_2010_0188-10 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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