Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c39d6ca95dd38b1…

MALICIOUS

PDF

389.8 KB Created: 2017-11-28 09:03:26 -08:00 Authoring application: Microsoft® Word 2016
MD5: f778b0313b64036ae7163db2d9603ae3 SHA-1: 4fee10f923abcebbf1ef06de9a32b92f30d6c2ae SHA-256: 9c39d6ca95dd38b12211ec0f34958e40e9fcbc7b6f3840252762d19ee847cce9
80 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The critical ClamAV heuristic indicates this PDF is a known dropper. A heuristic also flagged a shortened URL, which is a common lure for phishing or malware delivery. The document body contains a shortened URL and an email address, suggesting a social engineering attempt to direct the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier clean score 0.0004

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7286429-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7286429-0
  • Clickable URI uses URL shortener medium PDF_URL_SHORTENER_URI
    PDF contains a clickable HTTP(S) action whose destination is a URL shortener. This hides the final landing page from static review and is common in phishing redirect PDFs.
  • 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.jas.com/
    • http://ow.ly/QdeV30gS3jL
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00008900.bin
5d329a56299b06898e4d3b0182befe96987f52cdcbe7073f5d24de4541777b7a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8900 252768 bytes
stream_006_off0002710a.bin
d59c377b9baa761e9dbb6327b002ec4b2e393f56531f8225cf25b274fc1bf7f3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2710A 295148 bytes
stream_007_off0003bda0.bin
19e400a0beed6057e1c9387642f48c0d91996a7603eeec385bce2c36d37b201c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3BDA0 170956 bytes
stream_008_off0004ed08.bin
af3bf8cb7ac533909cd8ee9edf22d11cee128fa43f29b6e88168e452fbb75fba		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED08 261400 bytes

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