Malicious PDF — malware analysis report

Static analysis result for SHA-256 7029d41dc9fc558a…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 02:41:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 459a054afc7325c9885ca24279d39ef2 SHA-1: 0de2991e16019b51fc07cbe4b49f94759844d460 SHA-256: 7029d41dc9fc558a9ed3eccc567ac816189c6f1f2ffffd79d7a718196d539bad
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. The primary URL, http://netcdn.tw/app/479516143/how-to-get-minecraft-realms-for-free-game-hack, is likely used to host a second-stage payload or phishing content.

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/479516143/how-to-get-minecraft-realms-for-free-game-hack PDF link annotation
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/flamingo-free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-hack-aimbot-in-breaking-point-roblox_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-get-free-robux-legit-no-survey_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-get-minecraft-on-chromebook-for-free_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
font_00_sfnt_off0000304a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304A 21468 bytes
SHA-256: bce218ba9a066df8d797a039148db9f7c50498dbf6a25ae9ea72457f80762b5d
font_01_sfnt_off00005ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC0 18496 bytes
SHA-256: 206556e0041cad10c7ca9339ae93eddcae4d18c9e91f782ddd10985e6c899e97

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