Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d866d5f849ab03…

MALICIOUS

PDF

34.4 KB Created: 2021-06-27 23:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5bf8fd46711dbcafdab9c7692a192b0d SHA-1: 382a029fed8779537a3fe34427dea4ce03fdcabe SHA-256: 49d866d5f849ab033e42bbd87aca36b05b060a77c6b2b4588a15fb87ef13fb1d
82 Risk Score

Malware Insights

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

The PDF document contains multiple links and a call-to-action phrase, luring the user with game hacking content. The primary link, http://netcdn.co/app/431946152/how-to-hack-billionaire-simulator-roblox-game-hack, redirects to a website likely hosting malicious content or further exploits. The ML classifier strongly indicated maliciousness, and the PDF structure with embedded URIs supports a phishing or redirection 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/how-to-hack-billionaire-simulator-roblox-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-hack-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-potara-dragon-ball-rage-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-robux-with-no-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-mac_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hacks-for-roblox-assassin-auto-aiming_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pet-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/youtube-how-to-get-free-robux_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_off00002ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF6 22248 bytes
SHA-256: 9449e9065911d3be2a985673e5627c3ad72f27014aebd7a49404eddedd2b4d05
font_01_sfnt_off00006039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6039 19444 bytes
SHA-256: 9fa7162d0297b825eb887567afe18237d6bd771146fce183a642b82060690be4

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