Malicious PDF — malware analysis report

Static analysis result for SHA-256 538bd24e564ffcd3…

MALICIOUS

PDF

49.2 KB Authoring application: Karbon
MD5: 8a4b50fbce9200c1c17da398581eebbb SHA-1: 4ae44be33501d13e539d155a459f35c06c9d6515 SHA-256: 538bd24e564ffcd3f6eb4b555a232ffa4360f2313b1768459472a29b5d0a6e68
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The ClamAV heuristic 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing campaign. The PDF document contains multiple embedded URLs, with one explicitly identified by the PDF_URI heuristic pointing to 'http://brite-technology.net/uploads/1/3/0/5/130539840/cfbefe.pdf'. These URLs are likely used to deliver the actual malicious payload or redirect users to a phishing site.

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://brite-technology.net/uploads/1/3/0/5/130539840/cfbefe.pdf
    • http://jennnorthey.com/uploads/1/3/0/6/130604026/saperuluwo-zupul-luzuga.pdf
    • http://sellyourtxhousefast.com/uploads/1/3/0/6/130604314/327e90e6bd9f.pdf
    • http://cobblestoneconfectionsbakery.net/uploads/1/3/0/5/130544889/8840108.pdf
    • http://tcsonline.net/uploads/1/3/0/4/130435805/130435805.html#the+heirs+ep+18+eng

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000106b.bin
dc844bf82d16bad04ff75a6f284614531ac87cd29a89911151f490f655ed6bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106B 8556 bytes
font_01_sfnt_off0000808d.bin
33d8890f971be5605ce0901af5655e72446bd317eaa59fdc6a8be73c25a0dbb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x808D 4840 bytes

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