Malicious PDF — malware analysis report

Static analysis result for SHA-256 6993b21af2c1bd26…

MALICIOUS

PDF

45.6 KB Created: 2021-06-09 16:43:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 60a25ddb8fa2838f1d68cc790a1ef5a5 SHA-1: 10d506e86aa58ad6af565f252a2f316eb4dfa583 SHA-256: 6993b21af2c1bd2618bbdc6bc0af52f521ab7fe1bef1d82da46ad153f313cd24
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 0.9864

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 https://netcdn.tw/app/431946152/roblox-nation-com-hack-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/new-cheat-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-key-login-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-life-hacks_GM479516143.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_004_off000052c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52C3 25692 bytes
SHA-256: 4f65fae2735e818db61457efd465bebe574d369cd7630a209c768a933d8efe2f
font_01_sfnt_off00008eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB5 18664 bytes
SHA-256: b7c6b21e2482d33c063ccefa60ec6d54d29f901fdf1a7927b803e5ef171314d6

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