Malicious PDF — malware analysis report

Static analysis result for SHA-256 304aec3edfe53214…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 21:36:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c058d1115c0c8cf5ef8ac5d7ee6f7622 SHA-1: 6c60d4f2dd08faf79b270be59f9faad8db8d187a SHA-256: 304aec3edfe532142240837452fb07b1139e4933b45c4ef823d1de543115a2cb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that explicitly lure users with promises of 'Robux Gainer' and game hacks. The primary URL, http://netcdn.tw/app/431946152/robux-gainer-game-hack, is flagged as a high-risk redirector. The document's structure and content strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

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/431946152/robux-gainer-game-hack PDF link annotation
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-things-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/roblox-sunset-city-money-hack_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/114-hacks_GM479516143.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/get-everything-free-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/how-to-get-400-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/how-much-robux-can-you-get-with-1-million-dollars_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
font_00_sfnt_off00002f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F10 21468 bytes
SHA-256: 0ecd4b0ed557bf7a2c43a9283169201fec2968cdbd2d5fb562c83494e035b43c
font_01_sfnt_off00005e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E29 18672 bytes
SHA-256: d690b3e7b654bab7b8115217d18b638d313477ab5954378484c2ee9f66f6a84b

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