Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd77c534737cfb30…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 01:03:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5f53be8c84f7c8a232ef95c0174313d1 SHA-1: dce8041dfad64756053f4f4130f575f9bfd8cab5 SHA-256: bd77c534737cfb30adda7b2153cc6e95270f377ecdccc8d24313335c15bce6fb
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-hack-apk-link-game-hack PDF link annotation
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-hack-copy-game_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/byfantics-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/kazoks-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/google-roblox-items-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/earn-roblox-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/250-robux-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-hack-jailbreak-julian-juegos_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-skin-creator-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/pubg-uc-zip_GM1330123889.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-discount_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/robux-hack-place-download_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_off00002ea4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EA4 23008 bytes
SHA-256: 4b288a92e0962b743b7cd769fcd3044cddbda140e0c5ad357acdd7a10dbcbe4a
font_01_sfnt_off0000627e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627E 18180 bytes
SHA-256: 5b637a8a036eab97bffff91a515cae84fc40b6bddd589e778cc2e69a12b03167

Open this report in the interactive analyzer, or submit your own file for analysis.