Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ab4973a5eb3ca7…

MALICIOUS

PDF

51.4 KB Created: 2021-06-10 22:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b33e38054514cc1068fa5a7a422cb63c SHA-1: 810ee5a55ab4d263cce2566448e8c99ee7e285ed SHA-256: 92ab4973a5eb3ca75ff4924fd89c0f812bf2160103fad390c5810322e2b9b707
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 0.9685

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.tw/app/431946152/auto-keyboard-roblox-free-game-hack PDF link annotation
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-hack-hell-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-collect-free-liverpool-scarf_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005174.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5174 25836 bytes
SHA-256: 14c8040f56e58da7c40c7bd4ffc9f44c8e9676dcb8d25d126bf63dd2a7f9f6c5
font_01_sfnt_off00008d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A22 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off0000a433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA433 18776 bytes
SHA-256: 77188c103a4459e70ee822f579006631756d383cd7ee2612b4ef23159565a6cf

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