Malicious PDF — malware analysis report

Static analysis result for SHA-256 788ea4694bc1f67e…

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 18:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c19b7b3c6a8ecb029efd7e2fa56aa7f4 SHA-1: c94b7c99790ef9b4f829968580f5a4763f03e2d4 SHA-256: 788ea4694bc1f67edc641fb1ee421263aeb06b2e11f2663076918a4c63191aaa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' to lure users. The primary malicious link identified is http://netcdn.co/app/431946152/who-type-of-roblox-hack-is-the-bes-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious redirector designed to lead users to potentially harmful content or further malware downloads.

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/who-type-of-roblox-hack-is-the-bes-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-hack-for-roblox-that-works_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/email-roblox-about-hacked-account_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-hack-sur-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coinmaster-free-spins-link_GM406889139.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_off00003502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3502 22072 bytes
SHA-256: 251f265e686f5edd61cebac93f33a335b61c0c5a96b05bdbc4b0546ee80067a4
font_01_sfnt_off000065f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F4 19376 bytes
SHA-256: 0d4053e55aa0a205406a48cfa5016596f9b78e2b2758b22a25f32202d86905ac

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