Malicious PDF — malware analysis report

Static analysis result for SHA-256 4221d12148836e51…

MALICIOUS

PDF

33.4 KB
MD5: 4f6d9d5ffd327246ef7876b5725f0762 SHA-1: f1ca13d5662df2b91e807822c57a635e3a99050f SHA-256: 4221d12148836e51eedc90b2c1c4e103d8ed3215f9cca3f704097a3fd5ed753c
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF file was flagged as malicious by multiple engines, including ClamAV which identified it as 'Pdf.Dropper.Agent-7254616-0'. It contains embedded JavaScript and a RichMedia (Flash) object, which are common vectors for delivering exploits or secondary payloads. An extracted SWF file was also detected as malicious by ClamAV ('Swf.Exploit.Kit-513'). The presence of these embedded malicious artifacts strongly suggests the PDF's purpose is to compromise the user's system.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • ClamAV: Pdf.Dropper.Agent-7254616-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7254616-0
  • 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
  • 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.

FilenameKindSourceSize
XjwyIcmjawrEn.swf
82959a74bd2f365dbaff0af8a126e8d6efed63f658723f179f7020ea3628ed8b		 pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x16FF 27931 bytes
Detection
ClamAV: Swf.Exploit.Kit-513
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
javascript_obj0006_000.js
035d8d2492c4fa237da090fdccd132cd5f58a216517546c5c252d1ba8a68b398		 pdf-javascript-stream PDF /JS object 6 at offset 0x13A 4188 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.