PDF malware analysis — malicious · a6239b7692c8724c

MALICIOUS

PDF

32.2 KB

MD5: 7b021144cbdef4a27129b804090b6042 SHA-1: 30d5b54cda20516bfa280ba3807013e35f2925c7 SHA-256: a6239b7692c8724cc9b5a7db4e43fc64a0e2696006e4f950c361a2b06b83adb1

126 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript and is encrypted with an OpenAction, indicating an attempt to hide malicious content. The presence of PDF_JAVASCRIPT and PDF_JS heuristics confirms the use of JavaScript for execution. The embedded artifact 'M_9MDy__J_J_FO_57sC' is also suspicious. The overall behavior suggests the document is designed to deliver and execute a second-stage payload.

Heuristics 7

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
Encrypted PDF carries /OpenAction — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS

PDF declares /Encrypt and also references an executable trigger (/OpenAction). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`M_9MDy__J_J_FO_57sC` `f0dbcda016cd4efa7d92fe56335b9d2d65a95db84ef2c3561f2a1d8f706ac090`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x14B3	26800 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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