Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c9711bfb0aff512…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 23:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c037562c983439cc3745d7a27f76d15b SHA-1: 67a447f42414d3246c50480348010c379d827d89 SHA-256: 1c9711bfb0aff512ae7b507e3b4a22d4181eca27ce37e3b4c984ede4e66094ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators' for popular games. The primary lure URL is http://netcdn.co/app/431946152/murder-island-cheat-roblox-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious sites, likely as a first step in a phishing or malware delivery chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/murder-island-cheat-roblox-game-hack In PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/flame-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-hack-android-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-get-free-robux-buy-obby-link-in-description_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/adopt-me-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-rs-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-mad-city-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-hack-generator-club-no-survey_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_off0000307e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307E 21660 bytes
SHA-256: 7fab9aba21ab6e9f943ba1123d400e64da6ea90ad8d5d3f0004df7c11e43750a
font_01_sfnt_off00005fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEC 19268 bytes
SHA-256: 7175fce77336b5232538264ddae496c6c9bcb1ea732b3336eb1b87fe5100d78e

Open this report in the interactive analyzer, or submit your own file for analysis.