Malicious PDF — malware analysis report

Static analysis result for SHA-256 56675ea40d04b3cd…

MALICIOUS

PDF

47.1 KB Created: 2021-06-04 00:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c71872f280624adf67ced562edff3e44 SHA-1: d4814a1896417a4788ad3ec1a1ddd4788b6da998 SHA-256: 56675ea40d04b3cd1127eba8f3f5b2d9bbdd62a7c38b941cc89c088e79079d10
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 0.9769

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/479516143/wurst-18-9-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-match_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000529b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x529B 25664 bytes
SHA-256: 3a02d00db44e6ca379018b327e3b7869f06d04923709bbb2d153c72aaf65700f
font_01_sfnt_off00008c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C80 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9632 18040 bytes
SHA-256: 610e99e2acd1b95198e8f814a35adbd2f154dc84a3fbb91e1d0955418ef52df2

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