Malicious PDF — malware analysis report

Static analysis result for SHA-256 17da145a92584f0e…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 06:47:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 84c1f7c995a7965e33ee414b6b968f17 SHA-1: e19281dd2561d224142d2169024f26be6c12438e SHA-256: 17da145a92584f0e0fb4eacba27a0f0e2d42be734dfd8e8caa7c95b0ef36c053
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/406889139/coin-master-cheats-2021-game-hack PDF link annotation
    • http://lib.akper17.ac.id/repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-links-for-coin-master_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_off00004c51.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C51 28104 bytes
SHA-256: 2d9c6ba415ad6cf63ea9ed09dd274c15ba36af6217dad41f2c6f07a2e953f521
font_01_sfnt_off00008c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2A 18112 bytes
SHA-256: 8fd2be34c5ae6d36bafabdc0d90731bcc2dba590b40522d9b75e2e7b006908cc

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