Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f76301c9e70123…

MALICIOUS

PDF

49.0 KB Created: 2021-06-11 10:27:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: acf5d2fe3b43043b2ceaa2c1e32dae14 SHA-1: 808a16ae0dcf75e6bab201b1314cff5f8e5bfe4a SHA-256: d4f76301c9e70123f56b21b3c841533b334e509da560e00dc3405e2a6a0f9c50
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/hack-any-roblox-account-2021-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-bubble-gum-simulator-pet-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-script-pastebin-no-wait_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-create-clan-in-roblox-for-free-account_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-weight-lifting-simulator-hack-to-get-super-strong_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-flying-practice-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-shirts-catalog_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005294.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5294 27932 bytes
SHA-256: e31a091672a3b268e5699ceb81dc4366edd98b49573355fbd9e9a7aab93b8147
font_01_sfnt_off000090cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CF 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A81 19008 bytes
SHA-256: 71ca369e83e9b2def95406919f0c62e2e78098c9dd5b3968f87f3351da60d0e0

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