Malicious PDF — malware analysis report

Static analysis result for SHA-256 664751268857119a…

MALICIOUS

PDF

41.6 KB Created: 2021-05-11 22:08:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8c6155d72dd7d4f3300e55aab4691b78 SHA-1: c7970f5c27c3268ade2b9fda33de1e0bd2ebc3cd SHA-256: 664751268857119a28a6b33f9eb6868f80e3bf5d95e433d453ccfb9d4e1ef39b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a URL advertising a 'free generator / game hack' for Roblox, indicating a lure for a scam or malware. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics suggest it is designed to redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/how-to-get-roblox-credit-for-free-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-spin-generator-tool_GM406889139.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_003_off0000483b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x483B 24156 bytes
SHA-256: bb3b921015495605a741995d2714e1608fc2c385746ff658dd057dd73a1b331c
font_01_sfnt_off00007f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4A 18508 bytes
SHA-256: aaee93be15afea3f34265028f72e14c8d8177a28a7e511fa9958eeec3e94f784

Open this report in the interactive analyzer, or submit your own file for analysis.