Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1ec2d4653b852f…

MALICIOUS

PDF

234.5 KB Created: 2021-04-04 20:12:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e91268a31e06d6f06c6c4e93b7a7a7bc SHA-1: 1a5847b43f11f8efa8c9d33f64d8dee6b5c54e2f SHA-256: bd1ec2d4653b852f1b245a805fc930892c03b0996a5b7cd10894b8c4fbbc51c5
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a specific phishing signature related to Roblox. The document body, though partially garbled, contains references to 'Free Robux Accounts Roblox' and a heuristic firing indicates a visual download button lure. The embedded URI points to a suspicious domain associated with free Robux accounts, strongly suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0491

Heuristics 4

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gaminggenerator.org/app/431946152/free-robux-accounts-roblox PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00035636.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35636 22188 bytes
SHA-256: 39c803aa08e0d7a9e92a346f3e3a4fb23f1294271509524d2eae60fe8d74c0db
font_01_sfnt_off00038685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38685 17916 bytes
SHA-256: f482f05c17da22424c662e51fbcf67ecc80e36b260f52bb0947d04952c83b776

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