Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9384829f91073e8…

MALICIOUS

PDF

47.9 KB Created: 2021-06-08 11:24:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f79649fbffce4eb192d61cbe391327be SHA-1: d52a82f556e7141a5338e499bf598516b2384958 SHA-256: a9384829f91073e885b57faa3e4e695e01689ce0a21ab8f0bbc190a32b01f738
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'robux generators'. The document body and extracted URLs strongly suggest a social engineering lure designed to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the nature of the links and the lure implies a potential for further malicious activity, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/hack-robux-in-pc-now-2021-game-hack In PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://pjj.mtsntpi.my.id/__statics/gudangsoal/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000537d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x537D 24280 bytes
SHA-256: 493991124bd7537e8836382143f3c794734cd863ce0d7607673074f41497904d
font_01_sfnt_off00008ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB3 3500 bytes
SHA-256: e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634
font_02_sfnt_off00009655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9655 18968 bytes
SHA-256: e0ddb6c5075426722361c68f8771f2d33ff7068a275b574cc6b243199ca34d25

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