Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0669923aedd485a…

MALICIOUS

PDF

28.6 KB Created: 2021-07-20 01:41:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 331ccfc4ee1468edc10858dfe23c68d9 SHA-1: 15e6dda352da6d4ee434e8ddd2067c3680f91084 SHA-256: e0669923aedd485abcd1bb1a8fb8026877a39f595513e03c34a87836bb14b279
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious. It uses an urgency-based lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.0329

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://netcdn.tw/app/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack 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
font_00_sfnt_off00001e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E83 21560 bytes
SHA-256: a3d1bdef0aa82711d7f344d2980743b7a045d74967f060295172f8cba5f8665f
font_01_sfnt_off00004dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC4 18436 bytes
SHA-256: 3a0999d30397def23c47b5d80e97d9b0f28df4cbffb45a09cf4ec0f6b7597619