PDF malware analysis — malicious · 1f1584e248b6107a

MALICIOUS

PDF

4.7 KB Created: 2012-06-11 17:19:01 Authoring application: count slam

MD5: b3776a878d424aaaaae63675e43c2e7f SHA-1: 232a1c1ac897aeaba2424ae8e133e5180523e168 SHA-256: 1f1584e248b6107af98913fb078ac3fc98d11072a0f961bf317fabf089d2cf23

100 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, identified by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The 'CVE_2010_0188' heuristic indicates that the file exploits a known vulnerability in Adobe Reader related to LibTIFF and XFA forms. The embedded JavaScript, named 'stream_002_off0000032a.js', is likely responsible for executing the malicious actions. The overall attack pattern is a document-based exploit leveraging a specific Adobe Reader vulnerability to deliver a secondary payload.

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.
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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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
`stream_002_off0000032a.js` `6b8071db11e5e2680defc1147c829a1aa26a110e64c2597dea8ba0c9d2d83744`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x32A	35082 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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