Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b861d3599014140…

MALICIOUS

PDF

33.4 KB Created: 2021-07-04 10:29:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 36cf240b24fcf490911ee3f75e04c26f SHA-1: cd8bd14d18b00fe3ec6eeb939849d02c2d557e47 SHA-256: 9b861d359901414016d484fa8073defb95d4464fbcc56c2205a91b19a13e9a4a
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to external resource exploitation. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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-free-spin-link-today-50-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/roblox-give-game-pass-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-the-future-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/lazyblox-com-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-online-game_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/cheats-for-roblox-prison-life-20_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-free-username-changer_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/nisterv-free-robux-hack-youtube_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-client-pc-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-promocodes-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacker-web-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/unlockmygamescom-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/pokemon-go-free-app-download_GM1094591345.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacks-for-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34B9 23308 bytes
SHA-256: 95551b0349846c5116a787a9c817b6054cce762ec8ef879ee48be35d0c8451e7

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