Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d1eacb1b3c073ec…

MALICIOUS

PDF

44.8 KB Created: 2021-05-20 00:37:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 24eaa295aa361d0d0ef4668772d9edf2 SHA-1: 6c205ed46917c13cf725c23dcf2a509cdb0935a1 SHA-256: 2d1eacb1b3c073ec5733e3e5f5200ee0e46bf28213ced01f6f93fea74c4f41d4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a "free generator / game hack" lure. The embedded URLs, including the primary one at `https://netcdn.xyz/app/406889139/free-spin-online-tool-coin-master-game-hack`, are likely intended to redirect users to malicious content or initiate downloads. While no scripts were explicitly extracted, the nature of the lure suggests a potential for further malicious activity, possibly involving JavaScript execution within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/free-spin-online-tool-coin-master-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-rewards_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000492c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492C 24200 bytes
SHA-256: aaf27160e61b043a7aa998ec9a1a37637d34d68d27be0c3981dec3b9c6609dd3
font_01_sfnt_off0000802c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802C 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off00008db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB4 17960 bytes
SHA-256: ccd8a57ddc21ec57658e97dd2298d9591a9512a4c36f8c476c3f4a0a1231a43c

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