PDF malware analysis — malicious · 26ec0a738e241a67

MALICIOUS

PDF

6.0 KB Created: 2012-10-18 11:51:53 Authoring application: kkiiia=unescape(nehet.replace(/jjsjff/g, niittu.charAt(4

MD5: 32073322190a50baa92a52f714c90704 SHA-1: d374864815b690897b36bd6b6a79681d66959302 SHA-256: 26ec0a738e241a6739a51993cfa65837dcaa6d4ac732d2c4cd3b3a3e614a8d2f

200 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains an embedded exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader's handling of LibTIFF XFA images. This exploit is designed to decompress and execute a payload from a stream within the PDF. The presence of embedded files and the ClamAV detection further support its malicious nature. The primary attack vector is likely a user opening a malicious PDF document that triggers the exploit.

Heuristics 8

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.
ClamAV: Pdf.Exploit.Gen-259 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Gen-259
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0006.bin` `c09ae753ce4962d3d447f6ccdc05236eb9238277b66775a82f085f0fd265a84d`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0x257	130 bytes
`embedded_file_obj0016.bin` `6f1774ff43ac50a46d82da28c9ae43282e085e578fcd98c4f7a510404331954c`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x4A7	85 bytes
`embedded_file_obj0001.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x560	77 bytes
`embedded_file_obj0018.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0x60A	56 bytes
`embedded_file_obj0004.bin` `d4d42ce0e2becf87abd24a70143a95b67bb3633a77c6bfce0204f49023ee7cd4`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0x711	201 bytes
`embedded_file_obj0015.bin` `05a1a5e9d8cafbc9e45b0ec29c7e3972fe8a399608a2974083e0b20b8809b9ce`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0xA6C	36019 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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