Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2adb7c593a53a9c…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 11:55:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: be63a593d49cb79df1d46b56064e0e6b SHA-1: 4e6e830d35edacc14403a1d93a0e26777164b43c SHA-256: c2adb7c593a53a9ca6f7222c2f6b04043408311227fef0007808be3bc4baedac
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 0.9865

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.online/app/406889139/coin-master-gifts-game-hack PDF link annotation
    • http://e-library.akademitelkom.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/pokemon-go-free-coins-promo-code_GM1094591345.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://e-library.akademitelkom.ac.id/repository/is-minecraft-dungeons-free_GM479516143.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_004_off00005284.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5284 24912 bytes
SHA-256: 776057c85e52c135b5e34c7b4fd6c7911747b84018825950afa5240f23580ce9
font_01_sfnt_off00008bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD7 17544 bytes
SHA-256: 4fccc7f2e5b87b3b3bbfe27ac594c5d73c76fe2ff8079911e64f341337cd8bef

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