Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24c6ae464522a56…

MALICIOUS

PDF

33.0 KB Created: 2021-07-06 12:40:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 559d5ef1069c949c9b9e9289bd99e917 SHA-1: 8a51eb3ef311b31886b68cb97b3baad120ed9368 SHA-256: f24c6ae464522a56875670e8adfbe9eafabf3b69f0d4b919b2b5df7f29b99b94
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-tool-access-online-generator-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-rescources-no-download-or-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-blue-hair-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/como-descargar-hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-cape_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/pokemon-go-free-qr-codes-2021_GM1094591345.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-800-robux-gamekit_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-pants-on-roblox-2021_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_off00002eb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EB3 21868 bytes
SHA-256: 3c7bd0fb824852cc9bf26436e571c6d3be7fc569bb719e6bd8b6d685f4bd5fbd
font_01_sfnt_off00005ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE1 18080 bytes
SHA-256: 466388122f55d8099f8a2cc4a3f5b35df7f53bc4c57d622fd163220439f445a2

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