PDF malware analysis — malicious · e5ae704c0fe69057

MALICIOUS

PDF

14.0 KB Created: 2010-09-13 04:29:55 Authoring application: raw tav

MD5: 6ee1439f8c64612ec5f52e4c4158ab01 SHA-1: 0358e12b076d4c692ecccee2f9f6143edd06a0b9 SHA-256: e5ae704c0fe6905751cbf29c6a8adf1ae7f0bd766f3b47eb3f82ce7a72c6b393

178 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains XFA (XML Forms Architecture) which is known to be a vector for exploits. Specifically, the PDF_XFA_HEAP_SPRAY heuristic indicates the presence of JavaScript heap-spray exploit code within an XFA form. This code is designed to overwrite memory and execute arbitrary code, likely to download and run a second-stage payload. The presence of embedded files further supports this, with one large embedded file (embedded_file_obj0002.bin) likely containing the malicious payload.

Heuristics 7

XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY

PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
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
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 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0003.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0x97E	84 bytes
`embedded_file_obj0013.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0xA30	228 bytes
`embedded_file_obj0009.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0xB20	199 bytes
`embedded_file_obj0001.bin` `af1ee97b948b8e273691c1f75ca568b8b3771862268241c2e030e3cd720f81e0`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0xC10	119 bytes
`embedded_file_obj0014.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0xCC8	77 bytes
`embedded_file_obj0018.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0xD6F	56 bytes
`embedded_file_obj0002.bin` `283311f4b0156eadf38443a8bd01593b5d94a6c4c0cf917a9b35c2d820e73300`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0x10A7	15967 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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