Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6a1b7648d3da85…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 12:24:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb204ca5625bcedbca1bac9d732d545b SHA-1: dd289deaa107b62359c45c7de9251a941a11453c SHA-256: db6a1b7648d3da85708b5c80616d36aa44e3244eef11736a0d30cabe18378962
160 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a game hack lure, linking to known malicious redirector infrastructure. The embedded URL, http://netcdn.tw/app/479516143/free-vpn-for-minecraft-game-hack, is presented as a "free VPN for Minecraft game hack". The presence of a download button lure and the ML classifier's high confidence further support the malicious nature of this document. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

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/free-vpn-for-minecraft-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-buying-2021000-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-use-roblox-hack-scripts_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/custom-admin-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/earn-free-robux-by-completing-offers_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-on-roblox-in-2021-pycksel_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/blood-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-22-02-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hacks-2021-epic-minigames_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacker-mask-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B0 22512 bytes
SHA-256: cc2d07e533fa3d91f7ff614b1e39a67fef7a99351bc322ac1553ad57bba4171b
font_01_sfnt_off000062f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F2 18308 bytes
SHA-256: 6047db928a8352707eb03a3f86faaa23b81a2ba1dc8a66055a15f32f19a2db03

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