Malicious PDF — malware analysis report

Static analysis result for SHA-256 695f46c258d199d9…

MALICIOUS

PDF

47.0 KB Created: 2021-05-10 17:02:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8f51c4ce5dc992dcebc92ab65e796731 SHA-1: 6f540bda83a68be4603ab8ca95e7833957b341fe SHA-256: 695f46c258d199d9d109cf5d73b82efb37f4f89712c2b0474403fdb2c7be85e8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The embedded URL, https://netcdn.xyz/app/406889139/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index-game-hack, is likely part of a social engineering lure to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/406889139/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index-game-hack PDF link annotation
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.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_003_off00004b3a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3A 25556 bytes
SHA-256: 5b9c1e228615151b4198bb8e934263909b740f66d39a874b9347583115923b1e
font_01_sfnt_off00008668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8668 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9192 19440 bytes
SHA-256: 758f131b5ad06ada387de192ccba962ec8204edab22f872f65cf4aad9f2ca4c6

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