PDF malware analysis — malicious · a4dc280865d3e903

MALICIOUS

PDF

6.1 KB Created: 2012-09-24 15:30:07

MD5: ee1da091d326cc4de5d121ce844f5ec9 SHA-1: a2952e32d0116ea546825cc67eb0ae59473bf669 SHA-256: a4dc280865d3e90367a45f9abc08a868f12ac86301ee4ea54734e8239273e02f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution

The PDF file contains an embedded script payload and triggers a critical heuristic for CVE-2010-0188, indicating exploitation of a vulnerability in Adobe Reader. ClamAV also detected it as Js.Exploit.Pdfka-3. The embedded file, particularly 'embedded_file_obj0001.bin', likely contains the secondary payload. The attack pattern involves luring the user to open a malicious PDF that exploits a known vulnerability.

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.
ClamAV: Js.Exploit.Pdfka-3 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Js.Exploit.Pdfka-3
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0011.bin` `c09ae753ce4962d3d447f6ccdc05236eb9238277b66775a82f085f0fd265a84d`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x1FE	130 bytes
`embedded_file_obj0013.bin` `b0ee94041182e675e7a574fdcb14ca0124534731ee1967f7105d012086e7cf57`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0x2D3	124 bytes
`embedded_file_obj0014.bin` `d4d42ce0e2becf87abd24a70143a95b67bb3633a77c6bfce0204f49023ee7cd4`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x5B5	201 bytes
`embedded_file_obj0001.bin` `64f69d7845876ac82e04a71698e92bbeb5fd55852772f5374c2fa9573377bf71`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x8A7	39075 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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