Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e16b82a0285d0f…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 22:57:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4fdee6df306ad3ed8b4d3ac914e87cdd SHA-1: 60f7d65ace1ea9479d7d1af27a4f4032743c452e SHA-256: e3e16b82a0285d0f1c3a0f8c5a9f89806a4bf09b22a5d9c703533f3ad9636211
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-online-no-human-verification-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/roblox-devil_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/tiktok-free-anime-websites_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robloxfun-com-robux_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
stream_004_off00004ec5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EC5 24676 bytes
SHA-256: f349163eca92eb58c1d9014d6cbfa9ed66da2b4912bf80e613cae92eb9414dd9
font_01_sfnt_off0000874a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x874A 18324 bytes
SHA-256: 44fb42a750761b479d1ff9d84c79b576d569f1302724d8c024f9fb96550a5546

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