Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a8e3f29fd810a2c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 16:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 168b64651f7e97700264f912ac966326 SHA-1: 275962d701dd9640db5f08f01dfb89ca2256ae83 SHA-256: 4a8e3f29fd810a2c89f25799ebf90b61cf9e88b62d9ddb2afb1a23660d32cd1e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this, pointing to a URL designed to trick users into believing they can obtain free in-game currency. This pattern is commonly used to deliver malware or conduct phishing attacks.

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/431946152/get-free-robux-no-verification-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/hacking-prestonplayz-roblox-account_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/login-to-tiktok-free_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-use-cheat-engine-64-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/rbx-gg-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/cheat-roblox-lifting-simulator_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-obby-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-random-roblox-accounts-without-anything_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-make-hack-scripts-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-games-at-roblox-2_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-on-roblox-jailbreak-xbox-one_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/nezi-plays-roblox-bloxburg-hacks_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-no-hack-or-download-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/tiktok-free-view-iphone-apk_GM835599320.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_002_off0000311a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x311A 22740 bytes
SHA-256: c28dcfb536608f19e7c679800a3589b25900393a63026deda866357108efeef4
font_01_sfnt_off0000643a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643A 19072 bytes
SHA-256: e72ada6374821b36eed7d40ca7e66d9301b0fa24814d932b66fe4108e9a41cd9

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