Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce827dc11d8e8282…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 13:00:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 26d4fb5b3b2a10fb1b27b3ac27524297 SHA-1: 0be43b9d7e35a32d79f5df13694660b4b7e58d72 SHA-256: ce827dc11d8e8282274da7cd73e943e8cd89ffbcc6e18cc059c11c7aed63f647
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious URL, identified as a lure for game hacks and free currency. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-that-actually-works-game-hack In PDF document text
    • http://bressanassessoria.com.br/images/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-g_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-apk_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_off00004955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4955 24348 bytes
SHA-256: e9bfda87c56a934542565d02ade811dc1fc6d97f17d6a91c56c9fc4402c0eade
font_01_sfnt_off00008131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8131 19136 bytes
SHA-256: e9e8736bed1826902485352f20294e96b644ee357cd6186db79dc9b33c578c67

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