Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68c2f2dd295075e…

MALICIOUS

PDF

33.3 KB Created: 2021-07-21 03:01:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 43a079ae7ab607c7fc0c85b245520c3e SHA-1: 0bad01c7c0fec4d7389eb08192738d0ad812a313 SHA-256: f68c2f2dd295075e73f4f1582b601eef72d66cdcf5476a6a03fc504ce4d656fc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that redirect to a lure page promising free game hacks and verification services. The primary malicious URL identified is http://netcdn.tw/app/835599320/how-to-get-verified-on-tiktok-for-free-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to drive users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/835599320/how-to-get-verified-on-tiktok-for-free-2021-game-hack PDF link annotation
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.smansa-bdl.sch.id/repository/how-to-create-a-minecraft-server-for-free_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
font_00_sfnt_off00002ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCB 22780 bytes
SHA-256: 4413e33e88015969956a7da5148ffa469c9ff81a39ba460a22d27fb8c48bf6c1
font_01_sfnt_off00005fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD6 18328 bytes
SHA-256: 1054070171948e30c43aa2372c28bb4586f99f9ebf927238267b96eb5d2dcf67

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