Malicious PDF — malware analysis report

Static analysis result for SHA-256 a753dd76c8b3a678…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 13:08:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 071ec7fb22d49031fe1dc0e90799aff8 SHA-1: c20715aa37fbdeec80ed0806e23ab03914250ce2 SHA-256: a753dd76c8b3a6782acaeee9ea6430be4c9391f7d5d22d11ef6e4d6b17391a5a
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/coin-master-card-hack-apk-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/roblox-hack-tower-battles_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/ninja-legends-hackauto-farmer-free-op-swordroblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-roblox-novemever-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/spam-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-full-slot-script-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-be-a-pro-roblox-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/descargar-asshurt-v32-hack-para-roblox-torrent_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-robux_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_off00003527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3527 22428 bytes
SHA-256: 0b776a4144375adc8dda80a5c538f9ac3f894289368b1394e6132615c7c7f584
font_01_sfnt_off000066fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FC 18352 bytes
SHA-256: 7a6741876b8a4f47fa99d807c74985d7cbc04f51e0567589917582e4a0dfbcea

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