Malicious PDF — malware analysis report

Static analysis result for SHA-256 114dc2b8fd5b5972…

MALICIOUS

PDF

36.5 KB Created: 2021-06-27 06:19:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f39154d20ad9ea04df8203dd0f7ab88a SHA-1: 7274aacbbc6fd0c3f8bd2cafe184299cbda0154c SHA-256: 114dc2b8fd5b5972f4baf355cbbf3ac22cb954c1dccde9f559c47da8446c2aa3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to free game currency and hacks, specifically mentioning 'free Robux'. The primary link, http://netcdn.co/app/431946152/nilamyt-how-to-get-free-robux-game-hack, likely leads to a malicious site designed to exploit user interest in free in-game items. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to redirect users to potentially harmful content.

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/nilamyt-how-to-get-free-robux-game-hack PDF link annotation
    • http://library.poltekkes-palangkaraya.ac.id/repository/rainbow-antlerts-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/tiktok-for-free-download_GM835599320.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-radio_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-gift-cards-live-now_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-quick-and-easy-no-hastle_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-limiteds-for-free_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/download-roblox-free-on-mac_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/hack-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-spider-man-free_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-for-ipod_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_off0000355b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x355B 22700 bytes
SHA-256: e71d1efdd6691e03dbb78dd341635b040519e1b41f11b183842e0d793ba564e1
font_01_sfnt_off00006816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6816 19620 bytes
SHA-256: dbcfc99c050eb4546c44b1d2b67902c4cf6f900a37ca0d866cfe55328af9eda1

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