PDF malware analysis — malicious · 7be524033d5169f9

MALICIOUS

PDF

5.0 KB Created: 2011-06-13 14:12:02 Authoring application: B4FV

MD5: 28b40d899f7b53a709b2575b04ae5f6d SHA-1: dec73773512fc74bbf4d845655ffd598150c524d SHA-256: 7be524033d5169f9c5b0a159de75a2aa51622df2c3ae00a9a28989918c2c448d

142 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an embedded JavaScript payload that is triggered by the CVE-2010-0188 exploit. The heuristic firings indicate the use of unescape() and an embedded script payload, strongly suggesting the execution of malicious code. The extracted JavaScript file, stream_002_off0000031e.js, is the likely 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.
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_off0000031e.js` `95551d44fa3c531594d866c2ee02857fc4e938bb9012ffc1948b14557ab223e1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31E	52304 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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