Malicious PDF — malware analysis report

Static analysis result for SHA-256 0985147a7873fa55…

MALICIOUS

PDF

49.8 KB Created: 2021-06-03 08:22:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ca45e713931cca5131cdda380d07f624 SHA-1: 269e75bbbe46fe2e1772ee40fee97b762d4fdc4b SHA-256: 0985147a7873fa55cccd3eb22879bb6f16c9b07483ee3eef5b6f4136a35e8a90
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 0.9796

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/wwwcoin-master-hack-apk-game-hack PDF link annotation
    • http://pengolahan.perpus.wima.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/near-pubg-uc-code_GM1330123889.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/generator-robux_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_004_off00005024.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5024 25640 bytes
SHA-256: 53f4625fc6141f41b8cea861ef774cd7b649602f92442d86435ff664809f9265
font_01_sfnt_off00008baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAF 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off0000a03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA03A 18252 bytes
SHA-256: 6ad30ca5bc7219b5bac55008a01cbe3e57e256f2ef7eba8ef5748447f010f172

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