Malicious PDF — malware analysis report

Static analysis result for SHA-256 126649a9f5ad2e14…

MALICIOUS

PDF

34.0 KB Created: 2021-07-20 20:17:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 81492152f2ee592d949bfe05c5a068c7 SHA-1: 75e54f5df6defb52d2346ceeb144dbbedf0aa2b3 SHA-256: 126649a9f5ad2e14b22a738675c9d5175df1fccda0c055e26c0d7d508f63870f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document employs a lure of free game downloads and hacks, specifically mentioning 'Minecraft Dungeons Free Download' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR'. It presents a fake CAPTCHA to trick the user into clicking a link. This link, http://netcdn.tw/app/479516143/minecraft-dungeons-free-download-game-hack, redirects to a site likely hosting a malicious payload. The presence of multiple PDF_URI and PDF_GAME_HACK_REDIRECT_LURE heuristics strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/479516143/minecraft-dungeons-free-download-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.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_off00002ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC2 23152 bytes
SHA-256: ab8715cdea10ea140d1aa9560c0ab5839fe570c1f0497497fbbff91dbbb9f56d
font_01_sfnt_off000061cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CD 18720 bytes
SHA-256: 9131f8ae0af3742f2152d673706180936bbe7c3ea282a1fb4d0c655f83237649

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