Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bad20bd4d27eb8e…

MALICIOUS

PDF

45.7 KB Created: 2021-06-09 05:35:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 17a6630b536fc542fac4f4f720f3a81b SHA-1: 793f95263f542decd49c9df8f13eb0f8a6a37432 SHA-256: 9bad20bd4d27eb8ecd01c2e550c0c4e24abbf16da4372d3a7257a1bc853ca498
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and domains associated with game hacks and cheats, indicating a phishing or scam attempt. The document body, though partially corrupted, contains references to 'game hack' and a URL that reinforces this theme. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/how-to-hack-peoples-roblox-account-game-hack In PDF document text
    • http://jdlwealth.com/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/free-followers-on-tiktok-app_GM835599320.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/roblox-hack-accounts-apk_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-hack-2021-november_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/minecraft-pe-apk-free-download_GM479516143.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_off00005247.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5247 25664 bytes
SHA-256: a193ef1eab1fb988ce17b473042a33aa7bf169eb9df30c6da77ed423234cd6ea
font_01_sfnt_off00008de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE9 18920 bytes
SHA-256: cd7407ef9aef6c4c50b1fdf01e763fd2e22944ade267215dee183f168e7b87f5

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