PDF malware analysis — malicious · cfe1aeb67d6f3878

MALICIOUS

PDF

14.8 KB Created: 2010-09-13 16:53:22 Authoring application: uns cup

MD5: 3220cd0109d6d7e01f3330e43194875e SHA-1: bf9280d12fc72e321ce1cecbb66ddd179324d807 SHA-256: cfe1aeb67d6f3878cbc0b3a13fee50dcc9c0fe923670e70cddf03aaac5229c82

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.007 JavaScript

The PDF sample contains critical XFA heap spray exploit code, indicating an attempt to execute arbitrary code. The presence of embedded files, including a significant one named 'embedded_file_obj0016.bin', suggests a downloader or dropper functionality. The unescape() call and XFA script further support the exploit execution. No specific family is identifiable from the provided heuristics.

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_obj0013.bin` `d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777`	pdf-embedded-file	PDF EmbeddedFile object 13 at offset 0xAFB	84 bytes
`embedded_file_obj0008.bin` `24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xBAC	228 bytes
`embedded_file_obj0017.bin` `c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460`	pdf-embedded-file	PDF EmbeddedFile object 17 at offset 0xC9D	199 bytes
`embedded_file_obj0007.bin` `e9ea664e3557e72b1d5e95f3ebf629a3837eed7b65836544855817eca97b25bc`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xD8D	119 bytes
`embedded_file_obj0006.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0xE43	77 bytes
`embedded_file_obj0015.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0xEEA	56 bytes
`embedded_file_obj0016.bin` `3f4cc18d49867c8086ca6c22bb827846c9a77d4255991914c134630f03e144f6`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x1222	16905 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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