PDF malware analysis — malicious · bc611f99639c984f

MALICIOUS

PDF

79.7 KB

MD5: b3bd9e4091fa9bbc4772aa5fb66ae3bf SHA-1: 258ec890d988013f7bbb5e46f8dff206b7bc72fb SHA-256: bc611f99639c984f2fe9904f70ad874c447aec3721deda09d4b7baf44c3cc1f8

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

The PDF file contains an embedded XFA form with a payload matching the CVE-2010-0188 exploit for Adobe Reader. This exploit is known to be used for delivering secondary payloads. The ClamAV detection 'Pdf.Exploit.Dropped-90' further confirms its malicious nature. The attack pattern involves tricking a user into opening a malicious PDF that exploits a known vulnerability.

Heuristics 7

Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188

PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
ClamAV: Pdf.Exploit.Dropped-90 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-90
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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: 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` `9962204a763372274981c23b250ac3785cb4c7c3ab36887b138d8261287ab432`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x5B	13415 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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