Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8095d24ea69d0d…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 22:13:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c99da19703755bea61e48088fe2454d3 SHA-1: 483905c95792b78fdc89910d08cdc2f0f903f1e1 SHA-256: ba8095d24ea69d0dbafcbf19fe81ead3989c9743d0abe919f21ceaa3577a02b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. The document body, though heavily obfuscated, contains references to this URL and appears to be designed to trick users into clicking it. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the primary attack vector is the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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-and-coins-today-gift-reward-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-coins-coin-master-link-today_GM406889139.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
font_00_sfnt_off00005164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5164 25032 bytes
SHA-256: c942dec1fe47de22d91e16b0a601c9a45e1288c8ff83a2eee808bdb4a3234346
font_01_sfnt_off00008905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8905 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off0000958c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x958C 18404 bytes
SHA-256: 20323906fae34ef48fb3028b175607ed26afea8233a7a83525bcd6516f32abbb

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