Malicious PDF — malware analysis report

Static analysis result for SHA-256 a646cf5db5eecb6c…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 15:59:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bfd63c2d2be3272f602d8b702cf58dcd SHA-1: 8c1c55907d8f4021f95d10ef9825d21cf03b5662 SHA-256: a646cf5db5eecb6cd0efc1ca3ee02d530c5dcf413e10511689ca94671f6abd84
82 Risk Score

Malware Insights

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

This PDF document employs a game hack lure, specifically targeting users interested in obtaining in-game currency for games like Roblox and Coin Master. The primary heuristic indicates a redirector link to a malicious domain, suggesting the document's purpose is to drive traffic to potentially harmful websites. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/hack-to-get-money-on-roblox-rocitizens-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/youtube-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/robux-now_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-personal-server-hack_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-cheat-codes-builders-club_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_off0000313b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313B 22024 bytes
SHA-256: 7d1891e5af45671f8eb85e97b45df93779a640d2b88ad98e5490904168f8edc8
font_01_sfnt_off00006217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 19152 bytes
SHA-256: 47a537c228be48818b049d26a91b8e35acb27a1798931a95acbd90c28d11ed23

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