Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bca3dc4d2912ba7…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 12:22:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f6e1798b9e07a40ef94eee6473644386 SHA-1: e38532e338196e7c150e99f76e9e067b50e02796 SHA-256: 3bca3dc4d2912ba7056cad9c38c821db21bcdbca6e9bdaa1dffe02cc5aa0452d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to entice users to click on a malicious URL. The primary malicious URL identified is https://netcdn.online/app/431946152/20210-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or redirection to a malicious site, aligning with common phishing and social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/20210-robux-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/tiktok-free-like-website_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/instagram-coin-master-free-spins_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_004_off00005028.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5028 28116 bytes
SHA-256: 9d249fc4c65151916f88e870b9ece1df051f43ab130993bf87dc644081322050
font_01_sfnt_off000091b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B0 18252 bytes
SHA-256: c6c6b837e22de3676a2ba596b9db5dc5a1db3890ceafc7e2998a39c6caf756de

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