Malicious PDF — malware analysis report

Static analysis result for SHA-256 cff64215e371a9b7…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 23:11:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2994f5fe5c561fd7cb5dcadb9415435c SHA-1: 3d961a03969602b40ffa23cbfc9adb839b2d87ad SHA-256: cff64215e371a9b79a0538c907aea4b3522c26e4ddb30419bc6925b0468f8146
82 Risk Score

Malware Insights

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

The PDF document contains a high-risk heuristic indicating it links to a 'game hack' redirector, specifically http://netcdn.tw/app/479516143/free-printable-minecraft-coloring-pages-game-hack. The ML classifier also flagged this PDF as malicious with high confidence. The document body and embedded URLs reinforce the lure of free game hacks, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/free-printable-minecraft-coloring-pages-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-run-fast-roblox-the-strets-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/actual-hack-generator-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/boku-no-roblox-remastered-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hack-no-verify_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-hats-and-gear_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-hair-extensions-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/prestonplayz-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-de-roblox-de-robux-por-mega_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/yt-how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pubg-uc-shopee_GM1330123889.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/erased-citizen-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-download-iphone_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C7 22056 bytes
SHA-256: 1d620dabef6721c662a3109e9b86456a99c4f1c5c6d39c9ff69e35d8971f977c
font_01_sfnt_off000061a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A0 18384 bytes
SHA-256: b54cebd8b2bbc40deba01da3a93219bb66384243215780ac353a5f98c97c66c1

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