Malicious PDF — malware analysis report

Static analysis result for SHA-256 06da202deb4198fd…

MALICIOUS

PDF

43.5 KB Created: 2021-06-07 08:39:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 673904fbb453e4eb604cd2f2bd60ef2a SHA-1: d47867961f05fe49481dd096d80cf589d8c5c02c SHA-256: 06da202deb4198fd56fd8962ea69b2fe39acb3ad805b3777411e8345df2990ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free Robux' and 'game hacks' to entice users. It contains multiple embedded URLs, including a primary redirector at `https://netcdn.tw/app/431946152/free-robux-roblox-download-game-hack`, which is flagged as malicious. The document body and heuristics indicate a redirection workflow designed to lead users to potentially malicious websites or phishing pages. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/free-robux-roblox-download-game-hack In PDF document text
    • http://berntfoto.dk/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/tiktok-free-pizza_GM835599320.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/robux-free-com_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-no-email_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
stream_004_off00004e1c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E1C 24268 bytes
SHA-256: df8e2d71e2ce157343959b6bd01e13773f1b4a01c832f0a2fd7c81a4bfdc6b4d
font_01_sfnt_off0000859e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859E 18824 bytes
SHA-256: 83c595b492eba6a8ac2bd71645ef20cef4d6e8fabc0977a8fe05a92a19ff5d14

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