Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1fd8991e9d3d83…

MALICIOUS

PDF

48.3 KB Created: 2021-06-03 08:24:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d9367afbb3579142167a03f4fa6d5bf8 SHA-1: c133841387b0c116194761036ef5dedaaa88189c SHA-256: 0e1fd8991e9d3d83b30727c6cfb3428ea3e9c90676dc729bbfe28363a09dc923
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free spins, directing users to a known malicious redirector URL. The document body and heuristics indicate a phishing attempt to trick users into visiting the malicious link. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.online/app/406889139/coin-master-free-spins-2021-no-human-verification-game-hack In PDF document text
    • https://library.um-sorong.ac.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/tiktok-free-coins-apk_GM835599320.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/minecraft-net-download-free_GM479516143.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_off000051ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51EA 26904 bytes
SHA-256: 90f6e911daa15f459dea2c37de35abc0f558c328cd460da07da594cb3688905d
font_01_sfnt_off00008ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF6 2812 bytes
SHA-256: 869414959d7b492e0f799b560e1731e3ab498bd286c28e9f0d2ec33d9b6cf53d
font_02_sfnt_off00009895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9895 18820 bytes
SHA-256: 2c71750b10e3f4f91d0cb62777e145d12ef59acd231b22b6c7decf769d1f55c7

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