Malicious PDF — malware analysis report

Static analysis result for SHA-256 77a04cc8f11fc836…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 13:50:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 436cad1392a0e6667fdaa24589cab383 SHA-1: 3ae4537886b8b787c4489132ffabd5298b0cfaee SHA-256: 77a04cc8f11fc8369b6fd6ba3919f43c1d6164d447145ce639db59475a82b08f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to game hack generators and free Robux, which are common lures for malicious content. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. While no scripts were directly extracted, the embedded URLs suggest the document is designed to redirect users to potentially malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/robux-codes-game-hack PDF link annotation
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-facebook-hack_GM406889139.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_004_off00005045.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5045 25112 bytes
SHA-256: 812328a9fee4a2956c5f7a09c9026de5c43c616a89874d47cbd4ffa3c49b1089
font_01_sfnt_off00008a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8B 18024 bytes
SHA-256: efd3d7019031a842dae2276fdcf19d9726d4034b37c2d895580446cf97336b03

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