Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c72cda3540ec9db…

MALICIOUS

PDF

44.9 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: b0956a6d30782c999710b815637132b1 SHA-1: 1c3e1eb97446d5fbef86efa3b946f5a20da593c3 SHA-256: 6c72cda3540ec9db79b73d126d16e91594f86692ba9438e9fc4a6707701bb92e
94 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed embedded URLs pointing to external PDF and HTML files, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains references to game guides, likely a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://blockedbyfire.com/uploads/1/3/0/6/130620371/5134844.pdf PDF link annotation
    • http://narrins.com/uploads/1/3/0/4/130483302/3543142.pdfIn PDF document text
    • http://mirembegirlsvocationalcentre.com/uploads/1/3/0/4/130483213/4cf28c012.pdfIn PDF document text
    • http://gatewaytakanini.co.nz/uploads/1/3/0/2/130288567/130288567.html#hearthstone+dalaran+heist+guide+mageIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fca.bin
ffcd7f5398d1683e8107a8838fe3cfd94d8acff037d94acf42969d7b8d678d64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA 8476 bytes

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