Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcbd48bb494d0195…

MALICIOUS

PDF

44.6 KB Created: 2021-05-17 20:03:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 69dc66fdcc27b775740d1fcddba75220 SHA-1: 286f962cfb67ba845c5b5745e972d912b274dd65 SHA-256: dcbd48bb494d0195b36bf65330e5bd5db249290bc532f70eae9c5d791227a379
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple embedded URLs further supports a phishing or redirection attempt. No scripts were extracted, limiting the analysis of direct execution or persistence mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/431946152/no-scam-free-robux-game-hack PDF link annotation
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/oginject-co_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A03 24036 bytes
SHA-256: 03165277e14c8f1af92d5bb3f497ae7ee42b0671cab84eae8173a6aac16982f1
font_01_sfnt_off000080cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CB 3024 bytes
SHA-256: 33dcacf2fa2d61428718681d9d097c4e145610c4a667023b4fb57c85d69270a5
font_02_sfnt_off00008b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B21 18500 bytes
SHA-256: 028f53d29b1a624cb68bae5e747b7c177b5cbf8f783d4c53e2642c12f49f399d

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