Malicious PDF — malware analysis report

Static analysis result for SHA-256 957c63db43289316…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 07:30:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 53e40d83228abd7a8e1a097df2d772f2 SHA-1: 855c789882aaded45c10cbaa8da7a5249b69d80f SHA-256: 957c63db43289316817d410cd6e5fcf6bfe56d45a30e5c0796dfc1796f4433e2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action lure related to game hacks and virtual currency, specifically targeting Robux and Coin Master. The primary link, http://netcdn.tw/app/431946152/robux-download-game-hack, is flagged as a high-risk redirector. This suggests the document's purpose is to trick users into visiting a malicious site that likely serves a secondary payload or initiates a further exploit.

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/robux-download-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-make-your-own-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-tower-battles-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-items-on-alo-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-roblox-accounts-in-game_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/player-esp-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-cheat-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/all-ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-card-codes-unused_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_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_off00002dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBB 22588 bytes
SHA-256: dd26db957bcd3b7c41eb839f0b0feb443eb5790500158c313af0ccc449d46474
font_01_sfnt_off00006043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 19132 bytes
SHA-256: 65e99574e0ebd9224b7611d190469bc284736808a753a67128a7f1ec207522b9

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