Malicious PDF — malware analysis report

Static analysis result for SHA-256 21b62b3297d887ea…

MALICIOUS

PDF

33.6 KB Created: 2021-06-21 15:25:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d4f5eb792178902f3adc0255d4f0ca58 SHA-1: fc08ef5e5c7125f3f443b411cbd38eb8dd55b6db SHA-256: 21b62b3297d887ead424ccca4019944d16d76dff5ad3eea05cd68def02051297
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and cheats, with a primary lure pointing to a 'free generator' for Minecraft. This indicates a social engineering tactic to trick users into visiting potentially malicious sites. The presence of embedded URLs and the 'GAME_HACK_REDIRECT_LURE' heuristic strongly suggest this is a phishing or malware distribution attempt.

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.co/app/479516143/how-long-is-the-minecraft-free-trial-game-hack PDF link annotation
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-how-to-hack-to-get-followes_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-to-cheat-roblox-jailbreak-money_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/earn-free-robux-today_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_off00003094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3094 21784 bytes
SHA-256: e2290ac21beaeaea6d3e82449796385deb6e4957871c1b45da7b84fcdfd740a7
font_01_sfnt_off0000603e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603E 18404 bytes
SHA-256: a06c3727584f03e67681882c5fba84b6811554b03e9a9932a6f4547f5427a867

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