Malicious PDF — malware analysis report

Static analysis result for SHA-256 13804f2c385c18fd…

MALICIOUS

PDF

33.4 KB Created: 2021-06-28 02:10:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fc72f4ee121896411467bf9e13737f4e SHA-1: 052ad6a9110c113f0b97604a8f59af4ddda294ad SHA-256: 13804f2c385c18fd5e03181b5c61dc37b8aa506ecfebb1c23d2e30a2c78ea885
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-confidence heuristic firing for a 'game hack' redirect lure, pointing to a URL that promises free game currency. The document body and embedded URLs reinforce this theme, suggesting a social engineering tactic to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/roblox-free-alt-accounts-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/pubg-uc-no-human-verification_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-spoofing_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-java_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/getbucks-me-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/google-only-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/download-btools-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-win_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-face-anime-girl-blushing_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-free-spin_GM406889139.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_off00002d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D84 21872 bytes
SHA-256: d9ae6b1cd170534d0994bc24a7a82cdd68c20ba0a5275cdcdc850d3384b3a6a8
font_01_sfnt_off00005db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB5 18896 bytes
SHA-256: 39d63e70861bed76dd0eb088268e76c2c25bff5a43a657ffbb31a570461e5fa0

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