PDF malware analysis — malicious · b5d3ca8f4adc7cf7

MALICIOUS

PDF

29.7 KB Created: 2012-12-11 17:01:31 Authoring application: pgvdttsdhcgam (via waymhnpjmjprfv)

MD5: d0f5ea5e637799cef8c8a9707bdc367d SHA-1: ac60a8f468e99c443fd9cd415cd2ec25037a94c8 SHA-256: b5d3ca8f4adc7cf78ed1850f9ee61743de0a06bfe5050b0776e706a0c537088a

78 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. A deobfuscated JavaScript file was extracted, which likely contains the malicious payload. The script's purpose is to download and execute a second-stage payload, indicated by the heuristic 'Suspicious extracted artifact — Signals: Long encoded blob, Script obfuscation indicators'.

Heuristics 4

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 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0010.bin` `f5fada8101d0364117b2454492c05b64911df9d040cddf613d50212da6228859`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x12A2	10740 bytes
`stream_011_off000041c0.bin` `392d4f07be91edcc9359ef94bc01fc8fbd40fa048af13b58bb9eb28874772ed6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x41C0	209 bytes
`xfa_metadata_stage_000.js` `1dc7a76c19e3172c84356c006d9c6cbedf61c0e008d7cccf9b54b5b6ae0dc563`	deobfuscated-js	XFA /Title hex-XOR decoded JavaScript (raw, key=vanrxtsLKSR) at offset 0x5353	4114 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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