Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3776d7a43070d84…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 01:51:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e14fa795289abe8bd825e75dbf2f3319 SHA-1: ebda656ccecbb5061d16b3d0ac081e7744b2d75d SHA-256: d3776d7a43070d8484ad3e08004de1205ff3df5e09836357d62a113fe6fed4ab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free spins, directing users to the URL http://netcdn.tw/app/406889139/coin-master-free-spins-ios-game-hack. This URL is associated with a game hack redirector, indicating a phishing or scam attempt. 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/406889139/coin-master-free-spins-ios-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-bc-and-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-hack-dll_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-noclip-2021-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-fashion-frenzy-roblox-game_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-often-pubg-uc-appointments_GM1330123889.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/yt-comment-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-group-members_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-ad-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/bux-life-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-instant-catalog-item-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-laser-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-cheat-ore-tycoon-2_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/all-script-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/tiktok-free-template_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/gratuit-et-sans-code-hack-roblox-mad-city_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-hack-a-roblox-account_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
font_00_sfnt_off00003045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3045 22188 bytes
SHA-256: acfd889c6fbf9054b989826f580ed23443ba665f5daa72fbd7978f32159718da
font_01_sfnt_off00006156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6156 18176 bytes
SHA-256: bb85a420adb232085a4d21cc0ec3a1e1b4dd2570e44b91fb42254c612c32ab34

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