Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee99e521b70d385…

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 01:49:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f885215b3407c98263234c066d7b6e92 SHA-1: a15fbfc7b5c283d81632610ccda556296ace19f9 SHA-256: 0ee99e521b70d385f097973b7fc9d064cb4ed31c8a73f9c6c97b5ed42f4cd8c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack lure. The document body and embedded URLs reinforce this, pointing to sites offering 'free generators' or 'hacks' for games like Roblox and Coin Master. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-speed-hack-without-cheat-engine-dll-game-hack, which likely serves as a redirector to a malicious payload or phishing page.

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.co/app/431946152/roblox-speed-hack-without-cheat-engine-dll-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-lua-exploits_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-extension-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-to-get-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pastebin-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/yt-roblox-parkour-you-can-free-runing-the-buy_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off000033e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E5 21736 bytes
SHA-256: 93edd66f225d3b619b6a878417ca77e81f68f334b93c0d65d2d831ee90adaadd
font_01_sfnt_off000063b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B1 19904 bytes
SHA-256: d46a25d9276a200829fe3c6a94f858d9fd142e5fe982b4cd1cf496decf30060c

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