Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3e65c8c65c55e7…

MALICIOUS

PDF

48.8 KB Created: 2021-06-08 16:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7156660037274612a60044dda253e3d9 SHA-1: 9c04129acfdac39fc0129f79db01600999c3c2a5 SHA-256: 9f3e65c8c65c55e7fef89d53aa7857550f774495398255508f626b6006fb80ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks or generators. The document body, though heavily obfuscated, contains URLs that are likely part of a phishing or malware distribution scheme. The primary attack vector appears to be social engineering through fake offers, leading users to malicious sites.

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/hack-dragon-ball-super-2-roblox-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/rape-simulator_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-generator_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-links-for-free-spins-2021_GM406889139.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_off0000538f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x538F 26032 bytes
SHA-256: 2b835ed49ce2c8a6810966c1888ed9717c113e003b66bf906051b5958dd6c220
font_01_sfnt_off00008fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FDF 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off0000997f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997F 19076 bytes
SHA-256: c015b933a32d180df2a222102a029fcfba6308ec4eb0a4361c94de7cb672a2f9

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