Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf4acbe834f96a9…

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 21:18:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 796e07232092de2df86b1706f5378772 SHA-1: 201accb4fee53a85ab89f78980886d93ffdc2f34 SHA-256: dcf4acbe834f96a9dec9a2cfe05094e9fe97a00d50f2b8f8adea84e2ed60f21f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a lure of 'free Robux' and game hacks to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/free-robux-hourly-giveaway-game-hack, is likely a redirector to a malicious site. The document's structure and embedded URLs suggest it is designed to exploit user interest in game cheats to deliver malware or lead to phishing pages.

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/free-robux-hourly-giveaway-game-hack PDF link annotation
    • http://smpn1sda.sch.id/slims/repository/speed-hack-roblox-script_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hawt-sauce-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/como-conseguir-robux-gratis-sin-hacks-android-y-pc_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-alone-hack-script_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-2021-robux-no-human-verification-easy_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/orocash-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/someone-has-hacked-into-my-roblox-account_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-2021-upatchable_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-adopt-me-hack-tool_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-free-items-not-models_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-codes-no-verification-2021_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_off00003260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3260 22168 bytes
SHA-256: 2ebbb1529002c87bc8cb4174f0bbc3350393b4eaae6100be0bcdad4d3637928c
font_01_sfnt_off000063aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AA 19368 bytes
SHA-256: 04b599acd55ae4b6e3e11e2cf70ed57080736eb367444f57d36d115cd3c0f9ec

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