Malicious PDF — malware analysis report

Static analysis result for SHA-256 06041cf36852affd…

MALICIOUS

PDF

36.1 KB Created: 2021-06-21 12:56:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c46b656c5d50d4b88e402c8fead2be9d SHA-1: 286e0f113616dbebce3f0ba35497a25788282957 SHA-256: 06041cf36852affd11331fb3a27cd0d0d43f3a8e604a34a57961843e53e3d4e6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains multiple links to external websites, including one that directly advertises a 'roblox-vamprire-hunters-2-wall-hack-download-game-hack'. This heuristic, combined with the ML classifier flagging the PDF as malicious, strongly suggests a social engineering attempt to trick users into downloading potentially harmful files. The document body and embedded URLs are consistent with a lure for game cheats or hacks, which often serve as a pretext for malware distribution.

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-vamprire-hunters-2-wall-hack-download-game-hack PDF link annotation
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/high-level-roblox-hack_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-hack-extreme-injector-vehicle-simulator_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-net_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://shop.mercurytekindo.co.id/ckfinder/userfiles/files/roblox-free-alt-accounts_GM431946152.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
font_00_sfnt_off00003136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3136 22620 bytes
SHA-256: baf8bf1cfa6615a7b136777c8afa304d693f9d61ecf1c0fa6ddcf55fdd779974
font_01_sfnt_off000063b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B3 20416 bytes
SHA-256: 48c8dc4a0d2086970e17d7f6168aaec2f1a49504930b6572d5ca5946c0ece9f1

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