Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc3f88f145cfdcb8…

MALICIOUS

PDF

33.8 KB Authoring application: LibreOffice Draw
MD5: e56700c66283f75d7436145ae1e74337 SHA-1: 2e510ae39744c97f39f9b717c7e66201ab6d8a79 SHA-256: bc3f88f145cfdcb8834e9c275c6426be64717f770a07fd49cbf0e0f0f8dda288
94 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs. The ClamAV detection and ML classifier indicate maliciousness, specifically related to phishing. The document body, though corrupted, contains references to worksheets and external URLs, suggesting a lure to download further malicious content. The primary attack pattern involves tricking the user into clicking on embedded links that lead to malicious PDF files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://kentuckyroutezero.net/uploads/1/3/0/4/130476581/8900556.pdf
    • http://wajovipopi.windowsx64.ru/uploads/2020/01/29/4003289.pdf
    • http://townhousemarketing.com/uploads/1/3/0/4/130488754/wexutowinonedol.pdf
    • http://vepineg.1305shop01.fun/uploads/2020/01/29/domobofotezig_wafopemalor_girosefevi_bugaxa.pdf
    • http://bananas.care/uploads/1/3/0/7/130740465/lanefanogabe.pdf
    • http://pameladirnberger.com/uploads/1/3/0/6/130639467/130639467.html#esl+direct+and+indirect+questions+worksheets

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000109b.bin
3d8183daa4a0b81d53b668404fedfba6ec46472435b63485e5d87ee472af4c3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109B 7528 bytes

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