Malicious PDF — malware analysis report

Static analysis result for SHA-256 af65b2cb7e8a813f…

MALICIOUS

PDF

36.4 KB Created: 2021-07-05 14:12:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: df3bbde26b0d771f222398d47f534c1c SHA-1: f6640785212ca2e50cb35b65c341ef190eac282a SHA-256: af65b2cb7e8a813fc41870827db49861c819aae2caba30e209ea16ef9e93f73d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/how-to-hack-coin-master-with-root-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/how-to-get-free-vip-present-on-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-make-your-t-shirt-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/game-roblox-play-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-accpunt-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacking-laurenzs-account-in-roblox-yammy_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/when-will-vesteria-beta-be-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-destruir-paredes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-hack-just-put-user_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/speed-hack-roblox-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-app-real_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_off000037f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37F4 22760 bytes
SHA-256: c0678aae1bceef82fb5009fadf092ce90dd44473800916558db513bcfbf97925
font_01_sfnt_off00006aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEB 18532 bytes
SHA-256: 20637ff70b6c74965f19f977f66c5a6202ab351393aa3df1687bc9e39f472cc5

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