Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25889489b5e0d87…

MALICIOUS

PDF

35.9 KB Created: 2021-06-29 02:14:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b0740a4a622b83e26d166c871f90646e SHA-1: aac939da12822d9e27d0585530c27c8d380314ad SHA-256: e25889489b5e0d87ac4a0354036c435e13f4388713f31e138ec212a705be0a9d
82 Risk Score

Malware Insights

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

This PDF document employs a lure related to 'free ornaments' and 'game hacks' for Roblox, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of multiple game-related lures suggests an attempt to trick users into downloading a second-stage payload. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a downloader or exploit delivery mechanism.

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-ornaments-horrific-housing-roblox-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-give-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-e-free-command_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-cheat-engine-hacks-october-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-gametest1robloxcom-accounts_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/husky-1-million-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/quelquun-hacker-mon-compte-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-para-tener-robux-enderobux117_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-coin-master-spins-2021_GM406889139.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_off00003201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3201 23168 bytes
SHA-256: 086102e4b8be9adf01ce8566addd5271fed7f81c890093d69c06e37061df282f
font_01_sfnt_off000066ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AD 19276 bytes
SHA-256: d17786c0335e0b40f224e9ed079208c96d39c879f10ad69c127bd751d75a5566

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