Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdc7fc8cf54a5be…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 14:06:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8ac500eafa7bf974ad01b1b87cb9c38a SHA-1: f307ea300f74efa78dc9df7cdb6ca90b0abc93cf SHA-256: 8cdc7fc8cf54a5be576c8cb64ea66907cf7babb4f3687393420f3a8167536bd3
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/spin-coin-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/how-to-get-games-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-roblox-assassin-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-robux-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/2021-how-to-free-admin-commands-to-your-roblox-gane_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-bloxburg-money-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/300-robuxs-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-para-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-egg-hunt-2021-hacker-egg_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-rthro_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-robux-slows-down-towards-100_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_off000032ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CA 22984 bytes
SHA-256: fd5914fdb98781e9101152b6ac29a0d929bd1dd5fa070cee4db90cf24bc76821
font_01_sfnt_off00006666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6666 17908 bytes
SHA-256: b68420fea77245169a4148fb81a2a69b43defff413f27b9c268d76ec53e932b8

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