Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f887b60b904996e…

MALICIOUS

PDF

42.4 KB Created: 2021-05-17 21:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 119b7596be7b70177bb4450c9ecd53b9 SHA-1: 5646c4d4ec07f8c221c2acc79acb9fc01015687b SHA-256: 4f887b60b904996e7ba37d5a4b0d13f1aa859b292609fcfa9294df94d1019d60
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed to trick users into clicking links that lead to game hacking tools or generators. The document contains multiple embedded URLs, including a primary redirector at `https://netcdn.xyz/app/406889139/coin-master-hack-apk-download-for-android-game-hack`. The heuristics indicate a high likelihood of malicious intent, specifically a lure for game hacks. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-hack-apk-download-for-android-game-hack PDF link annotation
    • http://unilin21.ru/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://unilin21.ru/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/game-toolbox_GM479516143.pdfIn PDF document text
    • http://unilin21.ru/images/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://unilin21.ru/images/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/free-promo-codes-for-coin-master_GM406889139.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_003_off00004727.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4727 26260 bytes
SHA-256: 69a710dde53dfb50633523797e0da50f66321206d57b92cbc4c88b460def1dac
font_01_sfnt_off0000824d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824D 18636 bytes
SHA-256: fa7a6da1b4bcc113a0958a5ae0d8c2ab7d580afb69fd53804aad306f80425e53

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