Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a6176f0f947390…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 16:04:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a1614e32305e136ee816f0a214c22894 SHA-1: d168ce0aad8cc47b611d0049fade4d93d1a34d27 SHA-256: 18a6176f0f9473901191be98d8daa6f6a043e2ef1029b94bd4ca0b5a0ccd2714
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/roblox-apocalypse-rising-spawn-hack-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/inmortal-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-phantom-forces-hack-aimbot-redboy_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-glitch-murder-mystery-free-knifes-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-download-2021-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cheats-power-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/google-chrome-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-slx-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-ganes-that-will-hack-your-account_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-card-codes_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_off00003202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3202 22580 bytes
SHA-256: 468bed7071fb9a30f717795dae7e9ef0b073b6dd3a7a02f5df7073613ce3d1e5
font_01_sfnt_off00006465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6465 19296 bytes
SHA-256: 6fd107d3cef3101a5833863e9a47d471979d84c4d40fda548c663e97d10afafe

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