Malicious PDF — malware analysis report

Static analysis result for SHA-256 f237aebdbd07b514…

MALICIOUS

PDF

33.8 KB Created: 2021-07-19 09:53:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f81539a4eacfcea44d19ac05e4600f2c SHA-1: 2ede10ce2331ef7e341b0dd7d1bc3a942e5052cf SHA-256: f237aebdbd07b5144465d524a940d80ec35e5c7464888e779db68bbf9cee0ee3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9946

Heuristics 4

  • 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.
  • 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/406889139/coin-master-free-spin-and-coin-links-game-hack PDF link annotation
    • https://bullyinformate.org/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://bullyinformate.org/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://bullyinformate.org/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://bullyinformate.org/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://bullyinformate.org/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://bullyinformate.org/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://bullyinformate.org/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://bullyinformate.org/images/get-free-likes-on-tiktok_GM835599320.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_off00002e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6E 23088 bytes
SHA-256: b9b09b99570ceb3033f387c888f5914f2fc99a5a2d0ade3aa448846a6296f43e
font_01_sfnt_off00006242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6242 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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