Malicious PDF — malware analysis report

Static analysis result for SHA-256 3918bf6654f79745…

MALICIOUS

PDF

36.3 KB Created: 2021-07-04 12:37:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7a3f867a4a304f30d0423cf54e8166bd SHA-1: cc411a9c31c30d7f69d0384cf9420f52116d8480 SHA-256: 3918bf6654f79745885818267fd519df9b0c615308da014cbd1101c0b1dff200
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free in-game currency, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of numerous embedded URLs further supports a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and content are designed to trick users into navigating to potentially harmful external resources.

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-hack-spins-and-coins-unlimited-free-download-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/free-robux-no-human-verification-100-real_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-on-united-kingdom_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-adidas-sachen-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-anything-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacks-for-hhcl-hockey-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-the-green-dragon-wings-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-pets-live-in-pet-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-how-to-get-robux-no-hack-2021-fre_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-tower-battles-money-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000350c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x350C 22784 bytes
SHA-256: f6fc5404ff6adc18dbb20df27792690c9015875ea157fd49aa34436edbe491b2
font_01_sfnt_off00006820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6820 19368 bytes
SHA-256: add0edf7dd0394884c443ca24fd48469f9919274a259a3af7eac1d2f3d12793d

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