Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd079fcef8a9c61c…

MALICIOUS

PDF

33.4 KB Created: 2021-07-10 00:27:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 91f2af0adce56ace898b3dec7e158653 SHA-1: d3f1638bcb291efdb74e10c0c1665ea1e91d975c SHA-256: dd079fcef8a9c61cce756a6f06698cc4cadc7b7098d018224c266c791cea9d91
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body and embedded URLs reinforce this theme, suggesting a social engineering tactic to trick users into visiting a site that likely hosts malware or phishing content. No scripts were extracted, but the overall pattern indicates a malicious lure.

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/835599320/tiktok-free-net-game-hack PDF link annotation
    • https://www.lincolnec.edu.np/userfiles/files/super-power-training-simulator-roblox-script-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-get-free-accessoires-roblox_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/free-robux-nordvpn_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/tiktok-free-like-trial_GM835599320.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/free-robux-hack-no-games_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-make-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/how-to-get-free-robux-for-pc-2021_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/promo-codes-for-free-stuff-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.lincolnec.edu.np/userfiles/files/free-spins-coin-master-links_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
font_00_sfnt_off00002f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8A 22180 bytes
SHA-256: 0c31ca1cdf229284905bac04f2de9fd0e7795b23aac99be623931a63ede2492d
font_01_sfnt_off00006093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6093 17972 bytes
SHA-256: 42605ac70523995b4cc1e7d989198621422d40db68992a6c53f7ea70b22e2539

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