Malicious PDF — malware analysis report

Static analysis result for SHA-256 de432b48eaaaadf3…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 08:01:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2cd07a665a693d4f2dd8b14a9fb79be5 SHA-1: 2de274722fc699157ff1fb20040ab62b8758c29f SHA-256: de432b48eaaaadf341e55e25134580f71d748fe9d1a2310c28813702510da9aa
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 0.9971

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/working-coin-master-hack-2021-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_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_off00004ae9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE9 24872 bytes
SHA-256: fc1bed453e950948b3c15eb760f2ca053f2f0ce626cf26ded050cf749cd229d8
font_01_sfnt_off00008457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8457 18604 bytes
SHA-256: 744d1e6e570083d44e7505cde547d0f6819516289f88227fe4d6f00d173cb084

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