Malicious PDF — malware analysis report

Static analysis result for SHA-256 93473a01828b8b41…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 20:30:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4a6eee495101b58d51f32af37fbe1d3e SHA-1: 3d12478e49d7aecc9108f652a5f9608f6ea6b2ee SHA-256: 93473a01828b8b411cf3a15db366aac114e0cc2442c308311608988a84aa2553
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to the URL http://netcdn.tw/app/431946152/free-robux-hacker-us-game-hack. This URL is flagged as malicious and likely leads to a phishing or malware download site. The document's content and the embedded URI strongly suggest a social engineering tactic to trick users into visiting a harmful site.

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/431946152/free-robux-hacker-us-game-hack PDF link annotation
    • http://library.stembi.ac.id/repository/free-roblox-name-change_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-mod-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-speed-hack-download-free_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-vip-server-roblox-build-a-boat-2021_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/unicorn-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-robux-by-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/hacks-para-boku-no-roblox-remastered_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/games-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-get-free-stuff-in-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/https-wwwrobloxcom-catalog-keyword-freecategory-1direction-2_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/caesar-emergency-department-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-hack-khol-admin-perm-codes_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-jailbreak-hacks-transparent_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-do-you-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-2021-robux_GM431946152.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
font_00_sfnt_off000032c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C6 22336 bytes
SHA-256: 95a6ff5cb35f388cbe1ac30388ae73ca95c3869ca9a472b0729d280425633184
font_01_sfnt_off000063e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E1 18884 bytes
SHA-256: bfc674629a4fdfc233a3c1a19cbee54387e60bd0cdfc4a3107778b42d9fa82d8

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