Malicious PDF — malware analysis report

Static analysis result for SHA-256 27048f2e35abd816…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 14:19:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 13a0f4e811f261937cec5e4b4ae26997 SHA-1: 38a3bd10e27ad86f7d3af614736c35951c35d947 SHA-256: 27048f2e35abd816534657ac78a9f67dec49a4e01de7c49a76cec1501bd89952
82 Risk Score

Malware Insights

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

This PDF document contains multiple links and a deceptive call-to-action, aiming to trick users into downloading a game hack tool. The primary lure URL is https://netcdn.online/app/406889139/coin-master-hack-tool-pc-game-hack, which is associated with game hacking lures. The document body and heuristics strongly indicate a social engineering tactic to drive users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-tool-pc-game-hack PDF link annotation
    • http://perpus.stfm.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_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
stream_004_off00004fc8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC8 24120 bytes
SHA-256: 4a8d6b318bb3d4c9d92abcdafbb792359e8e48bcfbe910bf57bbb09255a7a822
font_01_sfnt_off000086fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86FB 17944 bytes
SHA-256: 870be5fa8cdab07c7616bfe00b6301e304862008d7cbda7089515cafcebcc899

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