Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0254ff6516cb3c…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 11:34:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 00660050b690edb19ba7cb5382852f4d SHA-1: 3e6a515e389061a86cbe7fde39098522117edd8c SHA-256: 9b0254ff6516cb3c83af4bd1bfcd6df811a6516f8470f698d6b0a39b9da2171c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a high-priority heuristic indicating it links to a game hack redirector, specifically mentioning 'roblox-web-store-hack-game-hack'. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

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/roblox-web-store-hack-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/wall-hack-cs-go-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/downloading-roblox-link-free-like-no-money-needed_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-for-xbox-one-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-weight-lifting-simulator-3-cheat-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/admin-commands-script-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-and-free-catalog_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/game-codes-eu-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-report-hacker_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_off00003120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3120 22084 bytes
SHA-256: fd6d8138f17fa26387a9271936e8fa9b753cb22f2802489be20d044701c2d171
font_01_sfnt_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 18960 bytes
SHA-256: 80a4b93a57b3c61955978bea94bf5e1daff43c3e0fde6629a0ffbb1128af8786

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