Malicious PDF — malware analysis report

Static analysis result for SHA-256 19038966c5a416df…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 13:40:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: eac4b266be88faeb4a2fa7c3ba29fd3d SHA-1: 5d59133ce016e352596b0aa1797e6a53ad62e297 SHA-256: 19038966c5a416df70af6a37e6d76069d5c8e86ef4314867723570703040886b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free in-game currency. The primary link, http://netcdn.co/app/431946152/roblox-new-code-for-free-sword-game-hack, is identified as a malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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-new-code-for-free-sword-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-tkay-the-race-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/tiktok-free-palestine_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-why-free-clothes-are-unavailable_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-cheat-engine-trainer_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/husky-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-city-free-game_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-2021-february_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/package-roblox-free_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_off000030c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C6 22224 bytes
SHA-256: 0e65969afe50cc21ff9505383854ae59db34cbbc2f67b77a4afa02cb67351b83
font_01_sfnt_off0000625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 18988 bytes
SHA-256: 3907675c428bd84ef2d809dc95f903907b5b9db172351a2041d676fee7c3eb32

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