Malicious PDF — malware analysis report

Static analysis result for SHA-256 36de2acb743df96f…

MALICIOUS

PDF

36.0 KB Created: 2021-07-06 04:19:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6bd1ca559675048b3366514b986c0d69 SHA-1: 88633f119f26257ad00ec006b92f3df1ce0fe2b1 SHA-256: 36de2acb743df96f499329fa8fbaa4e8c4e28c27773f1b3e00a2105b8cc05c1c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "generators". The primary link, http://netcdn.tw/app/406889139/coin-master-hack-2021-android-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs suggest an attempt to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-2021-android-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/apk-robux-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/is-there-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-cheat-engine-walk-speed_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/220-guess-the-memes-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/btools-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-face-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-working-free-robux-games_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-guns-in-apocalypse-rising-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-i-earn-robux_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_off00003622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3622 22744 bytes
SHA-256: 4ab8a113adc4d82190a18080e722c825d77edebfbe283a1792f154c1e1370a91
font_01_sfnt_off00006921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6921 18580 bytes
SHA-256: f67f88b1ce6c5db430876b5da8c68a5518a964090ab37f1ab5b5be580e390e4d

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