Malicious PDF — malware analysis report

Static analysis result for SHA-256 748c03c9616280a1…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 13:59:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ff774ad236aa693223084f528a1ef9c9 SHA-1: 06a6bd09a1a4ef7d24c429cc747309083c0f8b1d SHA-256: 748c03c9616280a1b879fc2fe6023ecbaeef7610b8a944e6e60aea4e720a1647
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 0.9864

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-hack-apk-link-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/tiktok-free-blue-tick_GM835599320.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_off00004e3c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E3C 30264 bytes
SHA-256: 148baeb35b76458f59adc838d220191c6a41ea1d91a2676306a982e1a72ba1d6
font_01_sfnt_off000091ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EE 17892 bytes
SHA-256: f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64

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