Malicious PDF — malware analysis report

Static analysis result for SHA-256 f875ec08d1be0ba6…

MALICIOUS

PDF

43.5 KB Created: 2021-05-13 00:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76c745e3a2bc632a3f999f4444b5bfb5 SHA-1: 084d08e0b844a5c5d7342420df91632305647d22 SHA-256: f875ec08d1be0ba692a9dafd0bda25401655c0e07d65112921598fbc963f1df2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a malicious link that redirects to a 'game hack' lure, aiming to trick users into downloading a payload. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent. Although no scripts were explicitly extracted, the nature of the lure suggests a potential for further malicious activity, such as downloading additional malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/479516143/how-to-get-minecraft-for-free-on-nintendo-switch-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-download-hack-ios_GM406889139.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_003_off00004e77.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E77 25096 bytes
SHA-256: 5803ce9a0ef76fc7b59d2877dd32d6f87dc6834c66256101d60d3978ebe0acc9
font_01_sfnt_off0000881b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881B 18212 bytes
SHA-256: f5fb374f4c57ea8e5b07667c881ff92ebdf307e1f7f4ca70019b2384515d6573

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