Malicious PDF — malware analysis report

Static analysis result for SHA-256 be97bdc34e9df3c6…

MALICIOUS

PDF

33.0 KB Created: 2021-07-06 09:41:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0152fe5bdf948bd3573db1890bbd975c SHA-1: 8dec5be4ef6a0c46c6ada8c527da169a2085e7ca SHA-256: be97bdc34e9df3c6ff209fe8dfbef7d69dce58c4e63eabca6e9e8eb13305aa24
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free game hack' which redirects to the malicious URL http://netcdn.tw/app/479516143/try-minecraft-free-game-hack. While no scripts were extracted, the presence of embedded URLs and the 'game hack' lure strongly suggest a social engineering tactic to drive users to a potentially malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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/479516143/try-minecraft-free-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-green-banner-drawing-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/tiktok-free-view-kong_GM835599320.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-unlimited-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/glitch-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/get-coin-master-hack_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
font_00_sfnt_off00002f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F90 21756 bytes
SHA-256: 199b20e1254418c22f3735b8cf54e8fbe52878dd96f9040db9cb60e1b50aa52e
font_01_sfnt_off00005f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F08 18036 bytes
SHA-256: 735085c12c9b9313aa1ff3cd51d3f8b84b47e84a017fb069310b851c719d56f1

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