Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1aab59fb93bf9ee…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 22:24:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 891f0b149df8918a7b5f63cb20ad8574 SHA-1: 3ee25d62a49da48b43ab51ba27bc644545f1edad SHA-256: f1aab59fb93bf9ee3fdbca8f5c2fb12639a0c70d98acec8f5238f207f4f2f8f3
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/406889139/free-coins-and-spins-coin-master-game-hack PDF link annotation
    • https://akbidprimahusada.ac.id/elibrary/repository/redeem-roblox-item-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/tiktok-free-google-home-mini_GM835599320.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/are-there-any-free-items-in-the-store-for-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-big-paintball-hack-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-freebies-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/c00lkidds-roblox-hack-client-rc7_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/robux-hack-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/50-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/pokemon-go-free-remote-raid-pass-february-2021_GM1094591345.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-roblox-wings_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_002_off00003236.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3236 23136 bytes
SHA-256: b5db0c4212c14f0caa02179de335cc6ee153daee6a5c9f81608db882dfde8a4d
font_01_sfnt_off00006619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6619 18348 bytes
SHA-256: c90f632020bcb1e728f62a43997badda2860e0d329262e99dedc1f8a12c39115

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