Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e649c63edd39e05…

MALICIOUS

PDF

47.1 KB Created: 2021-06-04 02:48:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d4022df7e9e138954fe2f6b2027fe2a3 SHA-1: ab5bb0f6a567704bbf1120262cb2be8e4aaa09b7 SHA-256: 3e649c63edd39e053d1ba9e6135cae07aab9a282d0c4e3dd587e3fd5e3a8d201
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 0.9832

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-launcher-download-free-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-app_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
font_00_sfnt_off000052e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52E8 30404 bytes
SHA-256: 48857458f71e3bd49cc7f7167d82bd1a78500aa83a4ac5a00f1e56b81fa624fd
font_01_sfnt_off000094cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94CD 18596 bytes
SHA-256: 0083e9ea94e8b99a1375f6b10a216971855eda4d393b5dd1b08efbb2a64bd6dc

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