Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d484f16450a2d5…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 12:27:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 45fc953e50a8aa8faa5b9c51f3ab240c SHA-1: 8700e10bb13d26a880d785ea8c071f0aed563356 SHA-256: e8d484f16450a2d573f2367c807b3d500a2e93e4b2ff3286970c40f81a7a9fda
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a specific URL. The document body and extracted URLs reinforce this theme, focusing on game cheats and hacks. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, but the primary lure is the embedded URL designed to trick users into visiting a potentially malicious site.

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-free-spins-cheat-game-hack PDF link annotation
    • http://perpus.polbitrada.ac.id/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/zombie-rush-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/hack-script-for-one-piece-legendary-roblox-copy-and-paste_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-hacks-and-cheats-that-work_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/roblox-mining-simulator-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/show-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-robux-using-gamepasses_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/guuudd-info-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/how-to-make-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/how-to-do-script-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/cheat-engine-roblox-edit-values_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polbitrada.ac.id/repository/earn-free-robux_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
font_00_sfnt_off00002f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7B 22608 bytes
SHA-256: 611eb8c28ca6e79ccba958bb11161c87184a2db3882e7d177e40fd6ef205e37e
font_01_sfnt_off0000623f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623F 18340 bytes
SHA-256: 31b040f11d31e2c25a3918167828aea55bdad87c8eae0a9348126ed232a1d2b9

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