PDF malware analysis — malicious · 42212c8e3dd2139b

MALICIOUS

PDF

14.0 KB Created: 2010-09-09 09:15:22 Authoring application: hey alt

MD5: 97485926a94bf9ea1148e1928051a47c SHA-1: 52787c15f0badfd17278aa0797a0406b88f9f5e6 SHA-256: 42212c8e3dd2139b6135a93ea39077eb34d4ed7ab1a07a6b57dfcfd9af2db7fb

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File 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 an embedded file further supports this. The primary mechanism appears to be exploiting XFA forms, likely to download and execute a secondary payload, as suggested by the embedded_file_obj0002.bin artifact.

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_obj0008.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xAF8	84 bytes
`embedded_file_obj0009.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0xBA9	228 bytes
`embedded_file_obj0016.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xC9A	199 bytes
`embedded_file_obj0003.bin` `170fb7ad8846745fcaf148a9d0dee7eb5e7602e99ca121ac463a81ed476aa5e4`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0xD8A	119 bytes
`embedded_file_obj0019.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 19 at offset 0xE40	77 bytes
`embedded_file_obj0011.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0xEE7	56 bytes
`embedded_file_obj0002.bin` `9a1b5d7cc47acf7296995ba568ebfa2ec1edde45f8b940e8a69a645130297e66`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0x121E	15286 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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