PDF malware analysis — malicious · a6fb31ce58fcd086

MALICIOUS

PDF

7.0 KB Created: 2011-03-10 12:28:17 Authoring application: mum rut

MD5: 76dca033da2dfdbc92154e2466ff6785 SHA-1: a494bc39794e191bc6b70252eccf16f7920965a1 SHA-256: a6fb31ce58fcd086c0a7138ef602f8df3474561c3041c11d539ad68ee3adb2ee

176 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The sample is a PDF document that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF XFA image parsing. The critical heuristic firing confirms the presence of this exploit. The PDF also contains embedded files and script payloads, indicating it's designed to deliver a secondary malicious artifact. The document body text is nonsensical and appears to be filler, further suggesting a malicious intent rather than legitimate content.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact high 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.
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

Extracted artifacts 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0017.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 17 at offset 0x74D	84 bytes
`embedded_file_obj0001.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x7FE	228 bytes
`embedded_file_obj0008.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x8EE	199 bytes
`embedded_file_obj0015.bin` `fcb27971e820836235848907929503a9e42aa692de22afeb9c77028899826893`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x9E0	154 bytes
`embedded_file_obj0018.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0xAB2	77 bytes
`embedded_file_obj0011.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0xB59	56 bytes
`embedded_file_obj0010.bin` `7eae26452939918db56eb7b0a5376dbcbaf6f51bf29410f8f68dc42a55cd85df`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0xED9	8749 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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