Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dbbd4f69e49fe97…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 17:09:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 345966a302c297ee39a4a9187e2a7e1e SHA-1: 6b3ada36c3d9066cb05d0f4820c6c64dccd88bee SHA-256: 9dbbd4f69e49fe976d0419f67a1577b817a5dc0a5d6a1c3bd64d8c746e35bfe8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'game hacks' and 'free generators'. The primary link, http://netcdn.tw/app/479516143/toolbox-for-minecraft-windows-10-game-hack, is presented as a download for a Minecraft tool. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or 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.tw/app/479516143/toolbox-for-minecraft-windows-10-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-counter-blox-cheats_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/greg-hacker-roblox-twitter_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-hack-roblox-and-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-cheat-engine-pastebin_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-generator-2021-android_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/hire-a-hacker-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/hack-coin-master-game-download_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_off000030fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FD 22480 bytes
SHA-256: a0c7c85bebaf8b5d742447391e13aa95e3cf51091bbcab2caa0931fa5d7e463c
font_01_sfnt_off00006339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6339 19252 bytes
SHA-256: 623c4a13fb93527244f4c51110f1d9814ca666c5a00497d7f3fb284e58f61732

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