Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8fd0f5e5762c7eb…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 11:53:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0f87ece41a24cf4f4ba994cb86986bf6 SHA-1: c96284e31a6422072dabd89961aff06874797d7a SHA-256: c8fd0f5e5762c7eb65f79da0689f513dcecf27c4103c6d5d2c9f5ef07694a198
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically advertising game hacks and generators. The primary lure appears to be a 'spin and coin link game hack'. The document's structure and embedded links strongly suggest it is designed to trick users into visiting malicious sites, likely for further exploitation or 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/spin-and-coin-link-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/script-hack-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-hack-android-oyun-club_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/cheat-codes-for-ben-10-universal-showdown-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-acces-code_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-stop-roblox-hacking_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/aesthetic-free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-roblox-in-ipad_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-and-coins-hack_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
font_00_sfnt_off00003117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3117 22588 bytes
SHA-256: c0054de4ccab238b1169e82ded046706053e6bb168aa3dc6709b41ad705583ce
font_01_sfnt_off0000634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 18252 bytes
SHA-256: 28736b5a9916539d9e1831f3abe62990d836adc850f66a331ce26b94ec86a8df

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