Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2e010ace280763…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 09:40:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 934891586fa1d8d2c3880dad492bd7eb SHA-1: 3bd04e7ceb63e1e035505df045af28012662a674 SHA-256: ea2e010ace280763ce0e91169a20c854af8e0b5be8f8c15f71bd9f47f2bf5067
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a heuristic firing for an external URI, all pointing to sites offering game cheats or hacks. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though partially corrupted, contains text related to "Coin Master Link Today" and references to a download URL, suggesting a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-link-today-game-hack In PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/master-free-spin_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/robux-for-free-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/hacks-master-coin_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://uimedan.ac.id/assets/ckfinder/userfiles/files/free-multiplayer-minecraft-server_GM479516143.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_004_off00004f09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F09 24408 bytes
SHA-256: 6b4cd0ecae35ee58c28e840971ca072c3f7727657f352cef37d07f877ea7c29b
font_01_sfnt_off000086ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86ED 18072 bytes
SHA-256: 9ba18410547103ebf9977f1e8d0e3c845630f063c7b47a9dc3698bca19a27760

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