Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c88a8de5e6a613b…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 13:22:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a598c61313283821d6ec5e25de20be60 SHA-1: 5d0d6af1f2150f40a44513661b7b50e399d747a4 SHA-256: 6c88a8de5e6a613bdd57138b267b243af49764790fd66194d394981e7e0f0050
122 Risk Score

Malware Insights

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

The PDF document contains a lure for game hacks and free generators, presenting a fake CAPTCHA to trick the user into interacting with a malicious link. The primary malicious URL identified is https://netcdn.online/app/406889139/reddit-coin-master-hack-game-hack. The document's structure and embedded links suggest it is designed to redirect users to potentially harmful websites.

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/reddit-coin-master-hack-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-games-to-hack-on-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pubg-uc-carding_GM1330123889.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack_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
stream_004_off00004ed9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED9 24656 bytes
SHA-256: 4d4416ec7cb19fbcb007b34c107d23aa6f91ea18d929537ad7639af5a90e8709
font_01_sfnt_off000087b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B3 17888 bytes
SHA-256: 4ced6d1736eaf1183f21a550cef0691f5f50ec9f529720bbb8623e36addd1710

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