PDF malware analysis — malicious · 915ab8e8dce32c88

MALICIOUS

PDF

58.6 KB

MD5: 4736a2aca646accb773f67886428198a SHA-1: 5a4277d2585f7119f5735fcd395928244c511fbf SHA-256: 915ab8e8dce32c8887b9d3d4d9afa83ae145c00f98b308190bbf192d93b91739

246 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains embedded JavaScript and a Flash object, indicated by multiple PDF-specific heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_RICHMEDIA. The ClamAV detection 'Pdf.Exploit.Agent-35955' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript stream and the Flash file ('mGpxKwTglmGI.swf') are likely components of the exploit chain, potentially used to download and execute further malicious content.

Heuristics 9

ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
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.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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
`mGpxKwTglmGI.swf` `b52b546f445164350b564869980b2766408aef84eb0be15a0893d30d2249d32f`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x1788	26804 bytes
Detection ClamAV: Pdf.Exploit.Agent-35955 Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `fabb7722e85f539bee942d8db0d975b545f28910b8a9498779070f6d8607e0ca`	pdf-javascript-stream	PDF /JS object 6 at offset 0x144	2214 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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