Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a3d29ce28bca80…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 18:12:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9f720f36c56d6d574726cfa5f6a445d0 SHA-1: 68322881c4c405eb38d6d346a66e77b2caa02c1e SHA-256: 00a3d29ce28bca80a895323c4a477a8e1bbcea5444f8f67a7a880be4d603db44
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/479516143/minecraft-hacks-wurst-game-hack PDF link annotation
    • http://opac.stieimalang.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/roblox-boxing-simulator2-hack-for-wins_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-hack-download-prison-life_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-phantom-forces-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-roblox-life-in-paredise_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_off00002ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC5 22240 bytes
SHA-256: ced33dce5e6c791b3691ff92e95b2366d7a4b976bb5189bf5fa0019473fb3f0a
font_01_sfnt_off00005fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE4 18364 bytes
SHA-256: 521d9e21ddb37bcf50fca8719f17a590544ab37de3ab7ae08bd463770fa05be1

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