PDF malware analysis — malicious · 325c8e99da0ecc8b

MALICIOUS

PDF

5.0 KB Created: 2012-05-12 13:11:01 Authoring application: EMxu

MD5: 1f88db9c8f031c576f1b988a4323dc82 SHA-1: 87080738328bbeb5ccf1ff151eb2804fc2dc4434 SHA-256: 325c8e99da0ecc8b1962816aa831b5d9506e03cc928585ef931c9ee09134c587

140 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms and LibTIFF. A decompressed JavaScript payload was extracted from a PDF stream, indicating the execution of a script. The script is likely responsible for downloading and executing a second-stage payload, although its exact functionality is obscured. The presence of the CVE-2010-0188 exploit points to a targeted attack leveraging known vulnerabilities in PDF readers.

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.
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.
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_off0000031d.js` `06ae7fa7c6ad810804981a1afb7b0e7cae2512ba60f082176c70ab6f92ef69e8`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31D	48131 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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