Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1d6c268de15d93…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 16:18:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4f28bb6e338abb14401d71ecd05a5357 SHA-1: f8d8234395f0f84f4c6ca0fea5e79b558266ad45 SHA-256: 4f1d6c268de15d93bd06cd6b2d7969b03631ee927e4619929e04e3470a0cc475
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to the URL http://netcdn.tw/app/479516143/free-minecraft-maps-game-hack. This URL is likely used to deliver a secondary payload or redirect users to a phishing site. The document body and other embedded URLs reinforce the theme of game-related cheats and hacks, suggesting a social engineering tactic to entice clicks.

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/479516143/free-minecraft-maps-game-hack PDF link annotation
    • https://www.legclub.org/uploads/files/files/how-to-hack-key-login-roblox-exploit_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-20-free_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-pets-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-cookie-stealer-roblox_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/elite-hack-get-roblox_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-roblox-codes-2021-no-download_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-roblox-card-generator_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-20210_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-may-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3060 22292 bytes
SHA-256: 91a2724a5014bdc460b0244f6d9b7635b7102d9863dec3989fbb523a0c53e29c
font_01_sfnt_off000061c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C2 18032 bytes
SHA-256: 831359ab32c83bb6c3c53a9b76d1176a195f842dbc2e51818f0e62b8083e239a

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