Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ba0dbd2beaa490…

MALICIOUS

PDF

48.7 KB Created: 2021-06-07 09:31:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 99a585e450a6b2b6211e284624492310 SHA-1: 82811a27cf649e74d01cfbf6913f15a75fa9bf89 SHA-256: d9ba0dbd2beaa49079053484183837e86b0cfd990830cb153f5133c35fb0412f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to websites offering game hacks and free in-game currency, a common lure for malicious content. The primary redirector URL is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/cheat-engine-cheat-tables-for-roblox-game-hack In PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://collectrobux.coIn 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
stream_004_off000056ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56BA 29292 bytes
SHA-256: 761574d02073a9251034c8fe6313bcde5f066e29989562243189598a448e417a
font_01_sfnt_off00009a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A99 18856 bytes
SHA-256: 1669b385af2a9ad7b8fc06244ed40d4fca463c8840b6bf205cf8aa44464efb12