PDF malware analysis — malicious · 51363f90cfbba62a

MALICIOUS

PDF

10.5 KB

MD5: a763bdb8185671914933e21c00721ba8 SHA-1: 37b5ecd8b457d6c8f7773cf6cc8b0e699becfed9 SHA-256: 51363f90cfbba62ab42cef0f94ed51c5c8c2a84d0d04510f12a6cbbe0908a1be

80 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file exhibits characteristics of malicious intent, including obfuscated objects and an embedded file, as detected by ClamAV. The presence of an embedded file and the failure of differential parsing suggest an attempt to hide malicious payloads. The overall confidence is moderate due to the lack of specific script content or clear document body text to further ascertain the exact attack vector.

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `2934880369571f1aae88b58d37a65d1cc0af3d80106465cbf80009d297268efe`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x8B	9332 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.97, consistent with packed or encrypted content.
`stream_000_off0000008b.bin` `8217b611f2f61809890382d8659f8b2d1ae3f4d8d17c7730a0a7efbd19637a6d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x8B	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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