Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad6bfce92a9f3bf…

MALICIOUS

PDF

41.0 KB Created: 2021-05-10 15:37:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f8cce18508e8fe4441de0bca3c581e06 SHA-1: 16be501821124aaf408da8fb59bbbafd967ffeb0 SHA-256: 0ad6bfce92a9f3bf2e214ed7b7b9c2e24d27fee3865b0a8468b5a6f9b48a6b0b
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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-hack-online-game-hack PDF link annotation
    • http://pustaka1.unindra.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/oprewards-login_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/earn-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-spin-coin-master-twitter_GM406889139.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
stream_003_off000048a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A9 24060 bytes
SHA-256: a9d02e3abadc2e25f6765fcb0078db172c960d0eced6b43fe8b4979838e178d5
font_01_sfnt_off00007f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3E 17788 bytes
SHA-256: fe6378a35aaddd1df9c91bfaa88201bdad89d62d9f4d299995ec0f595f057003

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