Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd08742e71194a82…

MALICIOUS

PDF

43.6 KB Created: 2021-05-10 19:36:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4625957a2399e191916327e9ed4e9982 SHA-1: 3572c624f9db760d10ac2f42cf4fe5aa0f7308f2 SHA-256: cd08742e71194a82a02fcda483195f8432a6fd0d5847fe372c948495ae57c6fa
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 0.9648

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/get-free-spins-coin-master-link-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-rape_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-win_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-codes-generator-no-verification_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
font_00_sfnt_off00004910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4910 23732 bytes
SHA-256: b1e83b1ddcdb383964e61954e2153b80f2674091bd568ba89357bc7dc05434b8
font_01_sfnt_off00007edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDB 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000888d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888D 18056 bytes
SHA-256: ab85056fbf29cd03dcfab7de7beb0343ed26656e2e8858e8ad52cb7aa31a5a92

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