PDF malware analysis — malicious · c3a9645faab45d98

MALICIOUS

PDF

6.2 KB Created: 2012-09-25 16:23:59

MD5: 1e0fb4376384569e902baae8a6b7cab3 SHA-1: 8c8005b782b263bd89fcce7bf51fe2d37789d78a SHA-256: c3a9645faab45d980555d7631ec39dbdcb675d59b5913fc9c5b567494649add4

218 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an embedded JavaScript exploit targeting CVE-2010-0188 in Adobe Reader. ClamAV detected the file as Js.Exploit.Pdfka-2, indicating it's a known JavaScript-based PDF exploit. The exploit likely downloads and executes a second-stage payload.

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: Js.Exploit.Pdfka-2 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Js.Exploit.Pdfka-2
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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0015.bin` `c09ae753ce4962d3d447f6ccdc05236eb9238277b66775a82f085f0fd265a84d`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x202	130 bytes
`embedded_file_obj0001.bin` `42faa5adec0e966b4c412d385477859791751ed4d78292ceef30b9f17fc597b0`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x2D6	123 bytes
`embedded_file_obj0006.bin` `d4d42ce0e2becf87abd24a70143a95b67bb3633a77c6bfce0204f49023ee7cd4`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x5F8	201 bytes
`embedded_file_obj0019.bin` `efe4e02252b9a18e5d859bf2ba0ecbc065745f7a90d99c93e63455d3a2fd08d2`	pdf-embedded-file	PDF EmbeddedFile object 19 at offset 0x8E7	39038 bytes
Detection ClamAV: Js.Exploit.Pdfka-2 Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`stream_002_off00000381.bin` `bc7aa4c97fbe629e5b670baeb037c5b6d9ad78369747e6449785c27e803880f1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x381	544 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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