Malicious PDF — malware analysis report

Static analysis result for SHA-256 88dea49eabc3d5c0…

MALICIOUS

PDF

33.0 KB Created: 2021-06-27 08:53:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 414d602ad98a9afef67f03a147731103 SHA-1: 05cf58b00b3a52f1c778b67b30679d1c3656f857 SHA-256: 88dea49eabc3d5c0dab72c08ced3254d947b9eeaf40dfd4f8ce4a4b2abd24922
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The document body and heuristics indicate a lure for free game currency, likely leading to further malware or phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/lion-studio-roblox-free-robux-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/tiktok-free-hosting_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-sand-simulator-infinite-backpack-code-hack-android-noscript_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-aimbot-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-rixty_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-t-shirt-size-free-shipping_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hacking-prison-life_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-you-speed-hack-on-roblox-jailbreak_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_off000029f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29F8 22376 bytes
SHA-256: 84e96481bcb62c4e799ceda739df514fbe9e76095b53fb30210f82174f41cabe
font_01_sfnt_off00005bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCD 19188 bytes
SHA-256: 3b4ac6d2b60fa6272d1292243cc9d32e916cdeaa4fe5ebd70f6a10eba61f9d28

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