Malicious PDF — malware analysis report

Static analysis result for SHA-256 65711f8f7d2c92c0…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 05:47:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 34c5df1ae66e6aa9a06b01e79d89aa3a SHA-1: 79ea8729592114aaab51814694501a3a3c8071c3 SHA-256: 65711f8f7d2c92c083e02a4f56ba69c1fcdd758cc5d89ef91c5483615c8ac125
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 0.9865

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/479516143/minecraft-hacks-for-2b2t-game-hack PDF link annotation
    • http://opac.stieimalang.ac.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/tiktok-free-book_GM835599320.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/app-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-roblox-codescom_GM431946152.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_off000053b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B1 25972 bytes
SHA-256: b9214ab84b3126b30b57064c8cfa620bb10b84e7b0488b4f79055be7062a4625
font_01_sfnt_off00008e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5C 18220 bytes
SHA-256: 937e0d59437a0b485b998528200998779253f2f1c88688cfa4fe5eff9e35f913

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