PDF malware analysis — malicious · 27229670db97a9fd

MALICIOUS

PDF

13.1 KB Created: 2010-09-09 05:16:01 Authoring application: ilk yah

MD5: 3a09f91d4129caef6986d7f8e51bf719 SHA-1: 84cbb4a227503435698e4cffee9560882f93a9b0 SHA-256: 27229670db97a9fddf4775c5678d59218cd8a1919a87c0d2098fc5ca7dfdac2f

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF sample contains critical XFA JavaScript heap spray exploit code, indicating an attempt to execute arbitrary code. The presence of embedded scripts and files, along with the PDF_XFA_HEAP_SPRAY heuristic, strongly suggests a malicious intent. The embedded_file_obj0015.bin is likely the payload or a component thereof.

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_obj0004.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0x9D0	84 bytes
`embedded_file_obj0007.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xA81	228 bytes
`embedded_file_obj0016.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xB72	199 bytes
`embedded_file_obj0011.bin` `704401506bdb48ebdbb64dc9849855e569d902ba091732d070c33716c330f1f8`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0xC63	119 bytes
`embedded_file_obj0008.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xD1A	77 bytes
`embedded_file_obj0019.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 19 at offset 0xDC1	56 bytes
`embedded_file_obj0015.bin` `48513fbfd88f8243462ef15011cd5a69f6172f244191e3cab8a4af0fa7dda68f`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x10F9	14407 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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