Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5b3ec1e4768f06…

MALICIOUS

PDF

37.9 KB Created: 2021-07-04 13:48:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 02e5d584d3f528142958bb6787dec25d SHA-1: bdd4062e1811bb8f485018e81a37109c288410b7 SHA-256: cb5b3ec1e4768f0606e24556bfbc0d9ffaa199f157dfbbc7622f687af105f6b9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded link is designed to trick users into visiting a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/406889139/archery-master-3d-unlimited-coins-hack-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-robux-generator-online-no-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hack-without-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/why-does-roblox-shut-down-when-i-use-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-money_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
stream_002_off000039b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x39B7 23388 bytes
SHA-256: 72ea82d112f79e4765674f21ad57a1c1b68a26644aaca46eed788655eb5bc878
font_01_sfnt_off00006e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E82 19384 bytes
SHA-256: 9b75674c05e91ed600c295d2e6b126a9e7055cd0ef585cb1713ecaa0414166d3

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