Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c9e541d36e4acc6…

MALICIOUS

PDF

49.3 KB Created: 2021-06-04 00:26:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 06e00fdd3fe8eca4c15da2912a3f86f9 SHA-1: 16a4322ec998b12c9bee68a11284e4be23185ef6 SHA-256: 2c9e541d36e4acc687de9805a24455da241a453899835872c46e0429f01924c2
122 Risk Score

Malware Insights

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

This PDF document employs a common lure by presenting a fake CAPTCHA or human verification prompt to trick users into clicking malicious links. The primary link, 'https://netcdn.online/app/406889139/coin-master-game-hack-game-hack', is designed to lead users to potentially harmful content, likely a game hack or generator scam. No scripts were extracted, but the document's structure and embedded links strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.online/app/406889139/coin-master-game-hack-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id//repository/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005594.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5594 28112 bytes
SHA-256: fece320fec3842de7cc0e2885f6f1cbf951bb6af3c2d7834e0d776d4ac139f43
font_01_sfnt_off00009545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9545 2812 bytes
SHA-256: 869414959d7b492e0f799b560e1731e3ab498bd286c28e9f0d2ec33d9b6cf53d
font_02_sfnt_off00009ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EE4 17976 bytes
SHA-256: 4c1d26c1fb4feed8092d99a8761960172faa49b0c213e7324f16c91828cd6f14

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