Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c1ec24f7363f23f…

MALICIOUS

PDF

36.3 KB Created: 2021-07-03 15:36:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b179e46236af664e61ee05137122f6dd SHA-1: 4fc4c2b1f4642bdf97dfa092809db032a728b091 SHA-256: 5c1ec24f7363f23f5eaafd910af8ec7f8c493ab66ea3c104af360efb461a6fd0
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.tw/app/406889139/coin-master-free-spins-link-today-ios-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-hack-roblox-accounts-2021-mobile_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-roblox-girls-outfit-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/como-recuperar-una-cuenta-hackeada-de-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-bin-hacked_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/who-did-the-roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/pubg-uc-300_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-free-robux-games-that-work_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_off00003799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3799 22624 bytes
SHA-256: 4b714af003d702033faaf85832f8b980154009819a5abe40c73297e3a8a77459
font_01_sfnt_off000069fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 18696 bytes
SHA-256: 7527cba58b63d14438adb6ea0e8db8bf2e3aaa5804fb6e6fc3d14b43130dbaab

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