PDF malware analysis — malicious · 8cc74764fd58d231

MALICIOUS

PDF

1.05 MB

MD5: 8446cd3f2b46040021d55c7517cdda2a SHA-1: c42cb988dc745ccca2a37ab4f0c4521ba00a80c7 SHA-256: 8cc74764fd58d2310eff88f9702bec4a74805de8a434006d38facc737e373f0b

208 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains an embedded exploit targeting CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate an eval() call and a script payload within a decoded stream, suggesting the execution of malicious code. The embedded file, 'embedded_file_obj0001.bin', is likely the second-stage payload. The ClamAV detection further confirms its malicious nature.

Heuristics 9

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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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)
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `45bb9d0f9614d6a5c7bfb0a93296d26fe30b1e6f330839bb5040863a4fd62308`	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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