Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe948d0223801b5…

MALICIOUS

PDF

43.3 KB Created: 2021-05-10 19:03:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1c1d611cfe411a4ddb6e52dabcc7e8b4 SHA-1: e4bfc360df52b5665851a7ed86b5025be9a49c93 SHA-256: 9fe948d0223801b5a958837354dfe1d44ddc182b04c799c3ade38fb6fea7e1da
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 0.9969

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-programmers-game-hack PDF link annotation
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/robux-page_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-card-collection-hack-apk_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_off00004b4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4B 26160 bytes
SHA-256: b0205a5f16fd2c1c571fa26eb2024186e1b19bb0639005d888f63f73bcb94f4e
font_01_sfnt_off000086b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B1 18416 bytes
SHA-256: 9b1b86d518bbcbecce2ac7037f2b10fa6fa9b3d2e28cf0c2cd03817ae8459785

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