Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5d38030afde1b5…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 23:26:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 24d163d4f8c4f754b952d9f74fd9e90f SHA-1: b519a92b118619a66113d0cde3179087f27be46a SHA-256: 8e5d38030afde1b596473efbaed7f534c78c4a7027fd72de0084600f04696849
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'GAME_HACK_REDIRECT_LURE', indicating it links to a site promising free game hacks or generators. The document body and extracted URLs reinforce this, with the primary URL being http://netcdn.tw/app/835599320/free-50-tiktok-views-game-hack. This suggests the document is designed to trick users into visiting a potentially malicious site, likely for malware distribution or phishing.

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/free-50-tiktok-views-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-catolog-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/can-you-please-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/download-roblox-player-exe-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-pdf-of-roblox-characters_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/d-day-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-redeem-virtual-codes-free-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/broken-bones-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-buff-body_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-highschool-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-cheat-engine-to-work-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-human-verification-generator_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_off00003396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3396 22688 bytes
SHA-256: 36ff4d6624a83175c1193c3d72817a935fe7640e1a9908b462121ecfea876cb8
font_01_sfnt_off0000665d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665D 18576 bytes
SHA-256: fba9a621b1f0e7c2ee5a1fd125b5aab39e77faa9b8693b6bc561bc991bdbe234

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