Malicious PDF — malware analysis report

Static analysis result for SHA-256 45a8613e5214a64c…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 12:27:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 34695de812883011b2566a938b8bfffc SHA-1: ff6ebe6b238dfbe013ffb4ba87bd768dc07799eb SHA-256: 45a8613e5214a64cca502e53928e34dcb3f9b9d97c4337e484b0cd61158c69d0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'free spins' and 'game hacks' for Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a deceptive lure. The document body, though partially corrupted, contains references to these lures and directs users to external sites like 'netcdn.online', which likely serve as landing pages for further malicious activity or scams. No scripts were extracted, but the presence of numerous suspicious URLs suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-spins-coin-master-hack-game-hack PDF link annotation
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/robux-premium_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/minecraft-hacks-wurst_GM479516143.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_004_off000050ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AE 25004 bytes
SHA-256: 038c956d7e6408ca05fdc458f392ad97a27ec1d266938d1e22ed122d99d444c4
font_01_sfnt_off00008933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8933 18056 bytes
SHA-256: 80aa601e39d75fb74aea55068656967f8eb3655b97589a2d3c4253cef7ecc220

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