PDF malware analysis — malicious · e99285483e78cd85

MALICIOUS

PDF

6.2 KB Created: 2010-08-29 16:19:36 Authoring application: styeZek colSnap

MD5: 02e3dbe24376a0cca64dfdb7324f2b87 SHA-1: 29f3624dd054e96aebbf0208ddee449b2a577095 SHA-256: e99285483e78cd85b2f9c853338ee3a3ac53e51625e03faaa3d0e051a8e00df3

246 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 PowerShell

The PDF file contains an embedded script that leverages the CVE-2010-0188 exploit, targeting Adobe Reader. This exploit is designed to download and execute a secondary payload, indicated by the 'Pdf.Exploit.Dropped-81' ClamAV detection and the presence of embedded files. The XFA form and eval() calls further support the exploitation vector.

Heuristics 10

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.
XFA form contains executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
ClamAV: Pdf.Exploit.Dropped-81 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-81
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://ns.adobe.com/xtd/
- http://ns.adobe.com/xfdf/
- http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `78f9631071f03cd2eafd8de565f399d0c62edde5175ed6f90c6215135b7f3b76`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xDB	134 bytes
`embedded_file_obj0010.bin` `d4ff871de6628873a7035e48c3dfa9affd8413c4e514b4f2b79a912efb0ddaf9`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x1AA	712 bytes
`embedded_file_obj0011.bin` `45f11d826a0e93bd507858834a234a2e4dc732e95001ef82283bc67dd3c9f646`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x4BD	446 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0012.bin` `103d1e7983cf88bfacedddb4af33ffb5317d9c2c8b3e1bfd987b2c5d712bc985`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x6C6	323 bytes
`embedded_file_obj0014.bin` `7e8ffa2629092ed6b3fe93570b6253a733d69bb23a95ed1d369dcc55cbacd404`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x867	12349 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`embedded_file_obj0015.bin` `e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0x1449	77 bytes
`embedded_file_obj0016.bin` `92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x14DD	56 bytes

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