Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9079a505297e3ca…

MALICIOUS

PDF

45.6 KB Created: 2021-06-04 04:44:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e3df1a4eb85556a1ce27bff5f0add017 SHA-1: 9e4b8ef92ec6441faeeac10549b9f56d0e1b27dd SHA-256: d9079a505297e3caaeaebf4695cac35306e2c2d4331c47650c0e97d7d9ed1157
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 0.9864

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/406889139/cm-spins-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-printable-roblox-images_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_off00005485.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5485 27300 bytes
SHA-256: f3d43ec3b1d990063ac3a901c7201e257b0d3da05b931e92fa020d303e3387da
font_01_sfnt_off00009279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9279 17508 bytes
SHA-256: 403d487e1444869915826cc9dc98aed396feeee14403a360b4dfe6e6cb2bddf1

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