PDF malware analysis — malicious · 22838c8a4864f237

MALICIOUS

PDF

5.9 KB Created: 2012-06-22 15:04:16 Authoring application: nyhed=oortfa(jyyas.replace(/fgje24j/g, arase.charAt(5

MD5: e6ffae24fd322f81b245e6223951ea04 SHA-1: fe53404000777413f6f9f3299c4ed494e2f5b959 SHA-256: 22838c8a4864f2378d9a11c08a8358dd9e0700c01dde5ef1790e09ce796e590e

162 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF file contains an embedded exploit targeting CVE-2010-0188 in Adobe Reader, specifically leveraging XFA forms. This indicates an attempt to deliver a malicious payload upon opening the document. The presence of embedded files and the ClamAV detection further support its malicious nature. No scripts were extracted, but the exploit itself is the primary attack vector.

Heuristics 7

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
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_obj0007.bin` `c09ae753ce4962d3d447f6ccdc05236eb9238277b66775a82f085f0fd265a84d`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x252	130 bytes
`embedded_file_obj0011.bin` `77fe237fdec1ba09721bdf3fdd9c5a8178333369f6b943d4948ae47cb2a8dd47`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x4B8	149 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`embedded_file_obj0005.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0x5A2	77 bytes
`embedded_file_obj0009.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x64B	56 bytes
`embedded_file_obj0017.bin` `d4d42ce0e2becf87abd24a70143a95b67bb3633a77c6bfce0204f49023ee7cd4`	pdf-embedded-file	PDF EmbeddedFile object 17 at offset 0x754	201 bytes
`embedded_file_obj0018.bin` `6287d2376181ad373e83f4827d06cf3c7ffec1dc9f4619b67ef3f73d4f4b40e4`	pdf-embedded-file	PDF EmbeddedFile object 18 at offset 0xA58	39459 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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