Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aab315e44d85ca1…

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 14:51:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d6c1f090f25860ad98a74ff7ac3df2c2 SHA-1: 5ec50de91f9c67c5071e0c0af689b02456d7e759 SHA-256: 8aab315e44d85ca16b9efcb0386481446e35c3e894c5755d22e29b19e0ab8062
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.tw/app/431946152/roblox-free-jeans-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-mod-menu-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-elemental-wars-hack_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-xray-hack_GM479516143.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_off00005002.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5002 27392 bytes
SHA-256: 95edb4dce0b6c82d97ee2d28a2be0ba5f670d879fc3294022de145d5c814e3b6
font_01_sfnt_off00008ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED8 18340 bytes
SHA-256: 37017c94384d5a042c0b3592d9d013c45004e54d891e789429c37cd937db11bd

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