Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc96230b24d4996…

MALICIOUS

PDF

35.3 KB Created: 2021-07-09 14:04:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dfb5ba01ad27214b8cb8f57ebcdbe043 SHA-1: a7852614831a25d7db48a92be0ca862a3afc0791 SHA-256: fbc96230b24d4996bf57fe1dbe7f2d1dd40644e35be4f09dc61af263d05701a6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one that directly advertises a 'coin-master-daily-game-hack'. The document body, though partially corrupted, also contains URLs related to game hacks and cheats. This suggests the document is a lure to trick users into visiting malicious sites, likely to download malware or engage in phishing. No scripts were extracted, but the presence of embedded URLs and the 'game hack redirect lure' heuristic strongly indicate 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-daily-game-hack PDF link annotation
    • https://vieclamjapan.com/upload/files/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/cheat-codes-for-candy-treasure-quest-on-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/robux-hack-ios-no-verification_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/fashion-frenzy-roblox-free_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-make-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-robux-east-on-anithing_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-dragon-ball-rage-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-roblox-gear-2021_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/hack-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/hacker-de-robux-para-roblox-real_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_off0000319b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319B 23552 bytes
SHA-256: f61b6371da9ccd0c08c76412728e15d615fb7b3bf9732bba0685652dd44b5461
font_01_sfnt_off0000671e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671E 18256 bytes
SHA-256: e5d2ae62ab428ccdde8c51a6c881ab5f3030241469dbfaa385cbaf7884f98516

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