Malicious PDF — malware analysis report

Static analysis result for SHA-256 60995f7f0b28f879…

MALICIOUS

PDF

171.9 KB Created: 2008-05-19 18:04:34 +08:00 Authoring application: Adobe Acrobat 8.1 Combine Files (via Adobe Acrobat 8.1)
MD5: 1f96a2c37626b813a3bbce57b062c54e SHA-1: 74ad8d1264e247a7a5e0998cd8ba5dce150b0ea6 SHA-256: 60995f7f0b28f879ffdf5f5b9695e68f603481b03a1a6ea10e181d0d5e8621ad
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and an embedded file, indicating an attempt to deliver a secondary payload. The 'Image-only document with action trigger' heuristic suggests a phishing lure where a screenshot hides a clickable element. The JavaScript appears to be designed to check the viewer version and potentially trigger an action related to embedded files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

Heuristics 5

  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 171 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.iec.ch

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
icc_00_off000027b7.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x27B7 3144 bytes
font_00_sfnt_off00003f7c.bin
e75fd1dac830791c1a9d38b46ec252d71db4435d06061f7d158c27cb4ae8ba0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F7C 6140 bytes
CNABB-Q-DE-2008-1-41-P6-S03-1.pdf
9a8df1f4501ef4d50abab5aa3e915c2e9ae9274aef32d960fe2b8c4b27f7fe9d		 pdf-embedded-file PDF EmbeddedFile object 2 at offset 0x1F425 24152 bytes
CNABB-Q-DE-2008-1-41-P6-S03-2.pdf
225471ce05b940e1642aff5f98548a86a32135ce69f084b1de5c13b9e9207ba2		 pdf-embedded-file PDF EmbeddedFile object 3 at offset 0x23B32 30735 bytes
javascript_obj0031_000.js
97e6c8fb70f6fedab160a41095c99dce3c9d53a0086d3a8d4e6d47cbe03dce61		 pdf-javascript-stream PDF /JS object 31 at offset 0x5CE 1946 bytes
stream_014_off000005ce.js
5c1ab2af46eef55b0d162c3a84464633475df9b138b64aa21a36ffaffbdffa88		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5CE 1336 bytes

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