Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c146510114eca4c…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 10:59:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b30d8dff6c0d9440483afcf002134d18 SHA-1: 96ec08eece50e0d7b87f9c49e3311c31c74b8a5c SHA-256: 1c146510114eca4c506572469dddfeb9966f915320be0c7fa0ac54857dabf93f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of offering game hacks and free in-game currency to trick users into clicking malicious links. The document body and heuristics indicate a redirection to external URLs, such as http://netcdn.co/app/431946152/hwo-to-hack-roblox-to-get-any-free-gamepass-mm2-game-hack, which are likely used to deliver further stages of the attack or lead to phishing sites. No scripts were extracted from this sample, but the embedded URLs and the nature of the lure strongly suggest a social engineering attack.

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.co/app/431946152/hwo-to-hack-roblox-to-get-any-free-gamepass-mm2-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/free-robux-circleci_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/pokemon-go-free-64-bit_GM1094591345.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-cheat-codes-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-roblox-galaxy-itan_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/block-hunt-hacks-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/sharkbite-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/youtube-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-on-computer-app_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/exploit-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/pubg-uc-earning-app-2021_GM1330123889.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-robux-free-button_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/tiktok-free-recharge-500_GM835599320.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_off00002eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAF 22272 bytes
SHA-256: fc70a09c75b969b9c2cd2ca46c45f846c41dc7f5f4e1c30c8578745defe490a1
font_01_sfnt_off0000601e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601E 20024 bytes
SHA-256: 1a0f85d6c859b70185cd6b91e5e6cd693ee084f9ab91faae1079d1d112715933

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