Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a184aded2e5383b…

MALICIOUS

PDF

34.7 KB Created: 2021-07-02 02:47:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 44f4a75d58537d57763ccb25acd8ff91 SHA-1: bc93120de23636765cfe6455f9389706906e1de8 SHA-256: 9a184aded2e5383b4eb18b809ae4adb3bf0b6830ea38f7048b6ffc8d6d7547e9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious websites, masquerading as game hacks and generators. The primary lure appears to be related to Roblox and Coin Master, aiming to trick users into visiting potentially harmful sites. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead users to untrusted infrastructure.

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/roblox-dragonball-cheat-engine-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-shirt-file_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-all-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/www-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-how-to-get-free-accses-to-welcome-to-bloxburg_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-speed-hack-on-roblox-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-speed-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/guess-that-song-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000318a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x318A 22028 bytes
SHA-256: 0ec0572489b0a309e7a72622553cfff744fa15e211d406bdafacd333c9284996
font_01_sfnt_off00006286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6286 19044 bytes
SHA-256: 8de7004abf8c7b73f052651fb535f276122e49da71bdcb1aa1c83870f63886fb

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