Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee90f42dba4ddd3…

MALICIOUS

PDF

36.2 KB Created: 2021-07-05 22:36:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0da1cd86a243791e33eb59b558b2d0c2 SHA-1: dde6aec9397184d9310a0760d9f3b82c4fee1ecf SHA-256: 8ee90f42dba4ddd3ea3622f72cb8ba9ea1d7e08b769968ec7636f6b42d6a340c
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 0.9980

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 http://netcdn.tw/app/835599320/tiktok-free-internet-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id//repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/web-cheats-xyz-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/ban-roblox-pour-avoir-hacker-des-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/i-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-roblox-card-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/huskybuscom-free-robux_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
font_00_sfnt_off0000397f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x397F 22628 bytes
SHA-256: f62fdc67d9b6cba1fa869d8e6dfde7a9ab46461db81d7fe7ef4bd1b057c63421
font_01_sfnt_off00006c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C08 17972 bytes
SHA-256: b0564336705b1b1e0c7a5309fce5aded16a8e403731e5b54a5fc765df44d19f0

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