Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aceb8a92c2e8d05…

MALICIOUS

PDF

44.4 KB Created: 2021-06-11 06:06:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae1d649362a8355faef6942980a60247 SHA-1: a44733e677938ee8e99fb354094816298c595acf SHA-256: 5aceb8a92c2e8d0538327fe86b6292cc64d290416eefcef4fc83226a54da61c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that explicitly mentions 'Roblox Murderer Mystery 2 Gem Cheats' and provides a URL to download it. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of external URIs and the lure suggest an attempt to trick the user into downloading a second-stage payload, likely a malicious executable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-murderer-mystery-2-gem-cheats-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-avatar-free-boy_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/tiktok-free-online-books_GM835599320.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/games-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/tiktok-free-bot_GM835599320.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-generator-2021-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
stream_004_off00005103.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5103 24084 bytes
SHA-256: 881c88969f36f64e3e1c55e8ed9c8d1724634ebcaf76bf4233ae282922e880df
font_01_sfnt_off0000876f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876F 19356 bytes
SHA-256: 574e9e1894f21200fbbffabd14b9e16355f9529bf288e83f484448a2fab4bcb6

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