Malicious PDF — malware analysis report

Static analysis result for SHA-256 73265a364efb1d0d…

MALICIOUS

PDF

32.3 KB Created: 2021-07-22 23:50:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2085c0714180973630d6411783623f57 SHA-1: 55d5c8486960146793ecc53dbc59160f955a53ff SHA-256: 73265a364efb1d0db7ef1b52521929000bddba3f4cf3c9ce900f2985d33de8a7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free game hacks' to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/479516143/minecraft-windows-10-edition-free-game-hack, is a known redirector likely leading to malware or phishing pages. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free game-related content for malicious purposes, potentially leading to client execution via a downloaded payload.

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/479516143/minecraft-windows-10-edition-free-game-hack PDF link annotation
    • http://acp-institut.fr/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://acp-institut.fr/images/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-coin-master-coins-and-spins_GM406889139.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_off00002bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD5 21696 bytes
SHA-256: d3f90ea1dcc13d10024a0bdc51fe5e48a633cb70f554df0ffdd2b89138fdc765
font_01_sfnt_off00005b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6E 18524 bytes
SHA-256: 0bf31bed13672a3e0ec3830f17f3a108a804d8b157495bd7936eaddb95c84b8e

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