Malicious PDF — malware analysis report

Static analysis result for SHA-256 485dccddf6209226…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 03:46:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1acdbef2dd0d742cdaba8062016eb231 SHA-1: 79bbc89f6f414c65fcddee7cc8b131887e3e1a3d SHA-256: 485dccddf6209226935467aef6020b7b3a7d1f889e51591b2385c8e019af08ea
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 0.9980

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/how-to-get-free-robux-no-verification-2021-game-hack PDF link annotation
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-hack-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.man2kotaserang.sch.id/repository/how-to-noclip-on-roblox-with-cheat-engine-64-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/how-to-get-free-stuff-on-roblox-catallog_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://perpustakaan.man2kotaserang.sch.id/repository/extension-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.man2kotaserang.sch.id/repository/roblox-jailbreak-hack-not-noclip-and-no-viruses_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/descargar-roblox-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/pubg-uc-online-free_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/how-to-prevent-free-model-hack-for-roblox-sudito_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/pubg-uc-nepal-price_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-robux-no-scam-on-a-computer_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/hack-coin-master-pc_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_off00002fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB2 22204 bytes
SHA-256: 090343423711cd3b3112dbe8c07364b1e36bcc22f03d6b6b06fcb4ea48e40e92
font_01_sfnt_off0000613a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613A 19640 bytes
SHA-256: daa201838bdbf48b85e104a71e58172e46eb57685cc2d98453f7e8ceecfd16ef

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