Malicious PDF — malware analysis report

Static analysis result for SHA-256 270e211a855be863…

MALICIOUS

PDF

48.4 KB Created: 2021-06-10 23:37:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 30fa0419c415c0bc3aede1ac17543fd7 SHA-1: d571cd9fce4e5bd8e4437c9d91e48bb567c143ca SHA-256: 270e211a855be86348d3779c287416c3d58af8f8cd25c92b032f8495c6e26f2b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generators" for popular games. The primary malicious link identified is https://netcdn.tw/app/431946152/prison-break-hack-script-roblox-game-hack. The document body, though heavily obfuscated, contains references to game hacks and generators, reinforcing the lure. The presence of multiple embedded URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/prison-break-hack-script-roblox-game-hack In PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-vehicle-simulator-free-money_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/cheat-codes-for-dayz-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/get-free-robux-by-entering-this-birthday_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-those-who-remain-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-in-a-game-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/titanic-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://pustaka.pasca.unand.ac.id/repository/qidqeo-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000524e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524E 26172 bytes
SHA-256: f38afff9512a3bf38c6e5bddd6927454fadce7363123714dc058c89f9df49d0b
font_01_sfnt_off00008f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F47 2880 bytes
SHA-256: 552e62132cae3603ce0819827e44d96a992bd06014cc5080bf3af4b2ea155b3e
font_02_sfnt_off00009920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9920 18736 bytes
SHA-256: 4de41c8831638c928701d2f824d0f7fc87b15dc2c85863c6f0433eca1ff44a46

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