Malicious PDF — malware analysis report

Static analysis result for SHA-256 9442e5e53737b138…

MALICIOUS

PDF

46.0 KB Created: 2021-06-10 12:28:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: dad0e9c22fb1eadf7f8b6f5099e19c22 SHA-1: 0fa8045bf9005068802bed3aa0acf0ef0e72fcb4 SHA-256: 9442e5e53737b13859f29949a5f02aca9895840ac6ba51cc69966a3ff1779d88
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to external URLs. The primary malicious URL identified is https://netcdn.tw/app/431946152/roblox-steve-one-piece-hack-tp-chest-game-hack, which is likely part of a phishing or scam campaign. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/roblox-steve-one-piece-hack-tp-chest-game-hack PDF link annotation
    • https://slims.bakrie.ac.id/textbook/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/pubg-uc-via-login_GM1330123889.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-lua-script_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-stuff-on-roblox-webste_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/earn-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-make-free-robux_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
stream_004_off00004e5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E5B 29056 bytes
SHA-256: dbe5ac8428437e2e3bff9961f3ba456b051adedcac78847055d4ad724b0d255c
font_01_sfnt_off00008f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1F 19016 bytes
SHA-256: 0e6012073a471b68a6876aa8765c049ada25f90de676b5c995149ecd9faf99ca