PDF malware analysis — malicious · 3d4d552735320591

MALICIOUS

PDF

695.2 KB

MD5: 15756e29fba906b2d0096c3fa0208d7b SHA-1: 3d2e927be522674e15452fefc9c07aece61921bb SHA-256: 3d4d5527353205917845b6f8b8093660c74b4f60cd00445406da96fbc857519d

146 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1566.001 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded script payload and triggers a critical heuristic for the CVE-2010-0188 exploit, indicating it's designed to deliver a malicious payload via a vulnerability in Adobe Reader. The embedded file suggests a secondary stage of infection. The presence of XFA forms and eval() calls further supports the exploitation of PDF vulnerabilities.

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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `a1b94b6a5022ef7698d993833b995ad904bc3946facffff5840b874fd86adbdd`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x159	26039 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 14 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).

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