Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eaaa512ebd81c64…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 05:18:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8a336946498a8a7311049b89d2378be1 SHA-1: 6b22c561cfcb124743e768d507c8ac06e9e62713 SHA-256: 6eaaa512ebd81c64cf848514b61b0b60949fa89b8a159917b5ed4c22a683ed8e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) 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 malicious score 0.9942

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/get-free-robux-now-game-hack PDF link annotation
    • https://felmerihomes.com.au/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://felmerihomes.com.au/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://felmerihomes.com.au/images/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://felmerihomes.com.au/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://felmerihomes.com.au/images/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://felmerihomes.com.au/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://felmerihomes.com.au/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://felmerihomes.com.au/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://felmerihomes.com.au/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://felmerihomes.com.au/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • 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_off00002b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B87 22932 bytes
SHA-256: 82b44685a661773d1ea3bde7cbe1cb9e44d8a72b9d049194ba69ed1a6c3d6eee
font_01_sfnt_off00005eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EED 18468 bytes
SHA-256: 952cd73f503fc30f976e7becd71335f77916a99414e1f81ed868d11088280245

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