Malicious PDF — malware analysis report

Static analysis result for SHA-256 38a884eb8c1cad44…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 00:29:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8e247b0f377c914dc21598a6c4b6bd7a SHA-1: 47e72c245f7d77e9497175b4f70940f8338ec22b SHA-256: 38a884eb8c1cad443a6c046a3b96ee19b9d84ca09fb382c0a91efabe5bdcbc40
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a prominent link disguised as a game hack generator. This link, 'http://netcdn.tw/app/406889139/coin-master-tool-hack-game-hack', redirects to a malicious domain. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure further supports a malicious intent to trick users into visiting the external URL.

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/406889139/coin-master-tool-hack-game-hack PDF link annotation
    • http://www.perpus.stfm.ac.id/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-obc-for-roblox-august-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hacks-that-actually-work_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_off0000318f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318F 22888 bytes
SHA-256: 883969ef7e350052850c1c70bc7b8fbd89adb658d22ac8c4d14b1d4863f6b29c
font_01_sfnt_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 18080 bytes
SHA-256: e08d712d3c7717e534c8527a13ecdf608e6cf7fb005f990d3f063776d4a09a25

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