Malicious PDF — malware analysis report

Static analysis result for SHA-256 567482c32174e333…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 02:23:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 23db476dd5082be6c5c25ea0ba77188d SHA-1: 11553673954383169ed4652d0b4cac69bd5c2765 SHA-256: 567482c32174e3335ff7c93e8d06ba931bd28533ed7f27c4d56f4e80b7d1fff9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a 'free generator / game hack' lure. The document body also contains the URL http://netcdn.tw/app/406889139/coin-master-free-coin-and-spin-app-game-hack, which is likely the primary destination for the malicious payload or phishing content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/406889139/coin-master-free-coin-and-spin-app-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/synapse-roblox-download-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-its-free-trailer_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-coins_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-dance-your-blox-of-cheat-for-focus-points_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cheats-to-get-money-on-roblox-woodson_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-robux-hack-download-apk_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
stream_002_off00002f6c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F6C 22896 bytes
SHA-256: a42a1f305ae4c537902592791e1fd90b507f71397f83a77f832500e042f2feaf
font_01_sfnt_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 18348 bytes
SHA-256: 8f4e14d352258b2a04c4750a5c5e6ee18e44525ef82eed3820f54d352c64eef8

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