PDF malware analysis — malicious · 8f23db49b1c313c1

MALICIOUS

PDF

5.6 KB Created: sdtres

MD5: ed19ac4f7fbeb678f8227fbb9e9d3613 SHA-1: f6b58f95828d8ef15dd90d1a94d27652b3197485 SHA-256: 8f23db49b1c313c1c0ffb4dfd7198a41a5518e398c33ef907915fccf9af10b21

270 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link T1059 Command and Scripting Interpreter T1059.001 PowerShell

The sample is a PDF document identified by ClamAV as Pdf.Exploit.CVE_2010_0188-10, indicating exploitation of CVE-2010-0188. High-severity heuristics confirm the presence of risky executable scripts within an XFA form and an embedded file payload. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector involves exploiting a known PDF vulnerability to execute embedded malicious code.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 8

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.
ClamAV: Pdf.Exploit.CVE_2010_0188-10 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2010_0188-10
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0011.bin` `59e368d454c5d7d0b2ac50f8450e08c3f6ef057d5ead5f54f5acd6fb3db24512`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x45A	41114 bytes
Detection ClamAV: Pdf.Exploit.CVE_2010_0188-10 Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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