Malicious PDF — malware analysis report

Static analysis result for SHA-256 b600371950c5fa69…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 08:28:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bccdbdd481b1bc9c53677843e5ad6ffe SHA-1: 809d46ec2d0313425c1f6c5fb5c64dbc3b0270cb SHA-256: b600371950c5fa6993c861a85f96f676dd4688b2ad60cf783969b27aeaf1b873
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for Roblox, to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-get-free-backpack-in-roblox-game-hack, redirects to a site offering a 'free generator'. This suggests a phishing or scam attempt, likely leading to malware download or credential harvesting. The ML classifier strongly flagged this PDF as malicious.

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/how-to-get-free-backpack-in-roblox-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/cheats-engine-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/win1codez-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/can-cheat-engine-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/i-think-ive-been-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/cheat-engine-roblox-noclip_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-pastebin-no-subscribe_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-thumbnail_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robloxcom-login_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-speed-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/easy-cheat-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-xploits_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_off00003007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3007 22132 bytes
SHA-256: 7ba5159511cbabb2ec8d974888845f0bd0f84bb2a47790c467e88b5d3627144a
font_01_sfnt_off0000610b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610B 19264 bytes
SHA-256: 14dd6f52184997de4d252280311a1372ca24a0815d8c281e3d582002b58605bb