Malicious PDF — malware analysis report

Static analysis result for SHA-256 36707af008102cd0…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 07:41:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c6b8cdc792fd4eef25cef12d0a7edb97 SHA-1: b359ff0c145df851efeb3fe781bc0287a1a74089 SHA-256: 36707af008102cd07907f2ea2f772b6cb17fb57d31940894e829f51dd1f4e544
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/coin-master-daily-free-spins-today-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hax_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/tiktok-free-ebooks_GM835599320.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/op-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-free-gift-card_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_off00003348.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3348 22376 bytes
SHA-256: c1ddc3ffbace2ff27a53dbbef2f0f209fbd4bf92a82319edc56051c3660b4014
font_01_sfnt_off0000653c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653C 18772 bytes
SHA-256: 4c4a305a778bb5e9b4a0f91ec50405ee9a3bc35e218e3183f664239bdcba7b2d

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