Malicious PDF — malware analysis report

Static analysis result for SHA-256 49adf68a4d4bb438…

MALICIOUS

PDF

42.9 KB Created: 2021-05-11 18:40:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 52a889d1049dc43c748deb5f59e102ee SHA-1: 6c6c36e38a8f6a25b5fcf8784af7c003bad3a3bf SHA-256: 49adf68a4d4bb438c640cd2844e2449811c4a7b15f091c412ff16781b0c1a4a1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-severity heuristic firing for linking to a 'free generator / game hack' redirector, specifically pointing to a URL related to 'minecraft-dungeons-free-download-game-hack'. This, combined with the 'SE_DOWNLOAD_BUTTON' heuristic, indicates a social engineering lure to trick users into clicking the malicious link. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-dungeons-free-download-game-hack PDF link annotation
    • https://www.gymun.cz/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/free-800-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://www.gymun.cz/images/free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://www.gymun.cz/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.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_off00004d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D83 24460 bytes
SHA-256: 0c02c6e250d14dec752eaf84effb6179eff101eb59e0b9d59cfc724083c784c1
font_01_sfnt_off000083df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DF 18720 bytes
SHA-256: 9131f8ae0af3742f2152d673706180936bbe7c3ea282a1fb4d0c655f83237649

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