Malicious PDF — malware analysis report

Static analysis result for SHA-256 5948f44411f0fac5…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 18:18:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 87ac87896f62c9ca2b650e98ba865699 SHA-1: d8e7f8fbe76f04d7d18eca6a37017a78ac942846 SHA-256: 5948f44411f0fac56803ccb8fbc2399d1e3d13d9eac29463c46aab2a4efdc330
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and generators, such as 'indian-gamer-roblox-ninja-legends-hacks-game-hack'. This lure is designed to trick users into visiting potentially malicious sites. The ML classifier also strongly indicated maliciousness.

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/431946152/indian-gamer-roblox-ninja-legends-hacks-game-hack PDF link annotation
    • http://perpus.stfm.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/sword-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/what-is-my-robux-promo-code-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-discord-servers_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_off00002c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C44 22208 bytes
SHA-256: 1ddb06be17b14d61a87ae9fcb1cc9505a54632b64544becf91f95eff7299d522
font_01_sfnt_off00005dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCC 19400 bytes
SHA-256: 971a5637353fcb433d07b78eeebeee8f10ee87b078967e38fc7e79ebcdd2772f

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