Malicious PDF — malware analysis report

Static analysis result for SHA-256 0476f84ffc60a9fb…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 01:20:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 61c1c5fe6f5a5076c0dc5f149b41c808 SHA-1: aadbc66609094f66853a9b4888f2ee8f2c9d09e1 SHA-256: 0476f84ffc60a9fbcfd2bdca7854b6fcd78dd5399058ffba40f7be9ef10fa71c
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.co/app/431946152/how-to-get-free-robux-2021-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-robux-in-adopt-me_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-robux-no-hack-or-anything_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/download-coin-master-free-spins-link-2021-today_GM406889139.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_off00002d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D92 21356 bytes
SHA-256: ffa0b0d7d892e780a0754f7575c9677e17e01aa6ecdd8fe22a7fd50cbd58d673
font_01_sfnt_off00005c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2B 19384 bytes
SHA-256: 140efaa19506918d6e23c6f72929d04436b836b18eb9dc717a4a442c24a9fe38

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