Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe4cf7a9df2a9c2…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 14:33:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dfc6fb8a9819684b11116e2075e16601 SHA-1: c62e2d370c1beba8801f49399f7b199bb7430f04 SHA-256: ebe4cf7a9df2a9c2a50b988ac1da00065bb0511c9473d439998ede349450e92c
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/free-25-spins-coin-master-links-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-websites-that-actually-work-2021_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_off000056a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56A1 24324 bytes
SHA-256: 3bb4b70b1f42864a5c6123608451f7cdc0acb13cf20f68e71649ec817e918730
font_01_sfnt_off00008e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8B 18316 bytes
SHA-256: 7fa45621bf9a4728c899947fc0d1a2becd31993fea733f0a04eabb1660a2ec34