Malicious PDF — malware analysis report

Static analysis result for SHA-256 06927fa4d469483a…

MALICIOUS

PDF

37.4 KB Authoring application: Smallpdf Desktop
MD5: 92ef04ea90afba826d2bfb57d5b0edfe SHA-1: a67a8ea820f6e555e9f986a64fd484543f2e5cac SHA-256: 06927fa4d469483ab4aade73131d6a6f1164f2c92ef5c9c2ac2d136db3b163d1
94 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to other PDF files, suggesting a phishing or malware distribution scheme. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' and the ML classifier strongly indicate malicious intent. The document body, though partially corrupted, mentions 'Irregular superlative adjectives list', likely a lure to disguise the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://boldercredit.com/uploads/1/3/0/3/130379163/rewovedurujure.pdf
    • http://didlogic.org/uploads/1/3/0/2/130289045/e89ddaff.pdf
    • http://derekrecks.com/uploads/1/3/0/6/130603779/sabukebubujitese.pdf
    • http://thehealthcoach.co.nz/uploads/1/3/0/7/130775817/detavadisuwer.pdf
    • http://sharedtravel.voyagerwebsites.com/uploads/1/3/0/3/130379105/130379105.html#irregular+superlative+adjectives+list
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000102d.bin
f8f4ed8a6d5ed10956c9a1a472d8accb38c6e8c7007caf8fea35c2089ac370de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102D 8352 bytes
font_01_sfnt_off00005702.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5702 2652 bytes

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