Malicious PDF — malware analysis report

Static analysis result for SHA-256 141cfd846b3f8b24…

MALICIOUS

PDF

34.0 KB Created: 2021-07-21 11:41:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9a554ffd5158949cdf2d7bacad0485e3 SHA-1: 76c6d03bcb4bd3e6b821813e7172808873b9a0e9 SHA-256: 141cfd846b3f8b24c518d708198dbe84a713809ac63020e1f0bacdc9098419dc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and generators, a common lure for malware distribution. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to trick users into visiting malicious sites, likely leading to the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/479516143/minecraft-free-unblocked-game-hack PDF link annotation
    • https://depilhome-fr.fr/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://depilhome-fr.fr/images/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://depilhome-fr.fr/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://depilhome-fr.fr/images/minecraft-windows-10-hacked-client_GM479516143.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_off00002f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F25 22872 bytes
SHA-256: 6a677a874a7634512836fc203ee356d86008f8ce7483a30d1f518d38b1785594
font_01_sfnt_off00006250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6250 18472 bytes
SHA-256: 4446ec9a14b3bfac30f066e0e962bc7f96b5cea98edad6ed93b9652aaf8297cb