PDF malware analysis — malicious · f23ed7185a85fd76

MALICIOUS

PDF

5.8 KB Created: 2012-10-05 27:44:18 Authoring application: gujas=herjjas(gjjer.replace(/mmsdje/g, dfjrwd.charAt(5

MD5: 0658a7a7e679214f89a0658b6207318d SHA-1: 5a29407736b13446896a7f9a39e14a0584970009 SHA-256: f23ed7185a85fd76ff1deda58b7bd3a7adf7860f199d675f8a315af9c4651bbe

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The file is a PDF document that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit is designed to allow arbitrary code execution. The presence of embedded files and the ClamAV detection further support its malicious nature. The primary attack vector is likely the exploitation of the PDF reader's vulnerability to deliver a secondary payload.

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_obj0010.bin` `c09ae753ce4962d3d447f6ccdc05236eb9238277b66775a82f085f0fd265a84d`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x259	130 bytes
`embedded_file_obj0019.bin` `38106be34eadc6491670ba86e82b9c439cf10ccff77c8a876cabd0a73f5f7edd`	pdf-embedded-file	PDF EmbeddedFile object 19 at offset 0x4C4	159 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`embedded_file_obj0003.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0x5B5	77 bytes
`embedded_file_obj0014.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x65F	56 bytes
`embedded_file_obj0001.bin` `d4d42ce0e2becf87abd24a70143a95b67bb3633a77c6bfce0204f49023ee7cd4`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x766	201 bytes
`embedded_file_obj0002.bin` `4349984f4cde916d16505f73005a1e0670a250fc0f949b0677d5a7c413c9954f`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0xA65	34691 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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