Malicious PDF — malware analysis report

Static analysis result for SHA-256 5532a4f844a2c53b…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 05:06:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 84b8e3de81df0fae4bc5e6f2a8c93772 SHA-1: 6d2db26a28d3772b2163b3acfc35163229ceb4ec SHA-256: 5532a4f844a2c53b49962d40f30bd10233f8081ce60bc6daf224b0932fccc535
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 0.9796

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/406889139/coin-master-free-spinv1-0apkpure-com-apk-game-hack PDF link annotation
    • http://lib.unar.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.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_004_off0000520a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x520A 25936 bytes
SHA-256: a52a03700bfdd7e385864210a1a289c1ab04142b281d0e7c63510ff80513477a
font_01_sfnt_off00008d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7F 3124 bytes
SHA-256: a0e4a5f378f23ac829e40ef1a0638115ffab18b17acd7561ed9b637601232063
font_02_sfnt_off00009861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9861 18848 bytes
SHA-256: 91e7b05a780382aae6d399a2a93ac14b6ad9de4f746c0002ad232406ad6b5769

Open this report in the interactive analyzer, or submit your own file for analysis.