Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07408f93ad93a36…

MALICIOUS

PDF

32.5 KB Created: 2021-07-25 03:13:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: be76cc109b4f05fb15aeba792cf6e59e SHA-1: 216b5d7b5446fccc4098fc5885b86a3c7c289b3f SHA-256: d07408f93ad93a365b031c090b9f7ddf138ec96531caab405fb8a90687d054f9
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 0.9900

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/haktuts-coin-master-free-spins-game-hack PDF link annotation
    • https://meltonschool.org/images/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://meltonschool.org/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://meltonschool.org/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://meltonschool.org/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://meltonschool.org/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://meltonschool.org/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://meltonschool.org/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://meltonschool.org/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://meltonschool.org/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://meltonschool.org/images/buy-robux-free_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_off00002a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4F 22744 bytes
SHA-256: 9c0bd8a5f2bb8d2cce02953520002846141e2c8b8ec74b3ce001654e209bc364
font_01_sfnt_off00005d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D43 18196 bytes
SHA-256: d21f7c9777ff22c572caba6bc61bff535e054503ba9d308437b2513133ac2854

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