Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7b7180713e50bd3…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 16:20:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e897d2e8a181010f288c03564b15980d SHA-1: 4e695322a225c75e4b6cddbe2aeb03d0cebaa7ff SHA-256: e7b7180713e50bd320489750300c3056aa0f4d977c2547d28f6234f89bcf9411
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for linking to a game hack redirector, specifically pointing to 'http://netcdn.tw/app/406889139/coin-master-online-hack-2021-game-hack'. The document body also contains this URL and text related to game hacks, reinforcing the lure. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the primary attack pattern involves social engineering via a malicious link embedded within the document.

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-online-hack-2021-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-scp-foundation-model-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/can-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-accounts-with-robux-2021-1_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-phantom-forces-dll-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hack-in-2021-in-all-games_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hacks-builders-club-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-robux-infinitos-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/earn-free-robux-robloxwin_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pubg-uc-myanmar_GM1330123889.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000030fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30FD 23228 bytes
SHA-256: 9c4b8bdcef5e9f328623089396f8a3a21ea9993c145d7b57ac5542c9a74e47a2
font_01_sfnt_off00006571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6571 18480 bytes
SHA-256: 6ca0512fe1902995c19dd8d16a5064896addc010cb175c56b83f50f9195b9e02

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