Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b998a6afce4091…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 17:12:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 723776c718d67f184f20f36196e6619b SHA-1: faeb662cc18007b3c70b511a70e2579d1f662e08 SHA-256: 66b998a6afce409173d59ff9ca313667be40e315fa1e83038c0ac58ad01d3f24
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document employs a lure related to free game currency and hacks, as indicated by the document body and heuristic firings. It contains multiple embedded URLs, with http://netcdn.tw/app/431946152/how-do-you-get-roebucks-for-free-game-hack being a primary indicator of a redirection to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt.

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.tw/app/431946152/how-do-you-get-roebucks-for-free-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-hack-fe-games-roblox-v3r_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/tiktok-free-app_GM835599320.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-hack-exploit_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-roblox-cape_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/can-pokemon-go-free-account_GM1094591345.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-hack-map-kat-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-faces-on-roblox-october-2021_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-roblox-accounts-that-are-banned_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/androidp1com-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-no-human-verfication-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/robux-hack-html_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/cheat-codes-build-a-boat-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-noclip-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_002_off00003193.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3193 22672 bytes
SHA-256: a7a0a22c02ad74eef3322c46766446f6525d1399dca407b03d2620ed7ea67855
font_01_sfnt_off00006406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6406 19276 bytes
SHA-256: 041621602f91f6b02ab17a8512f032c3ef5c76435d73db42d8fa43aa781a2561

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