Malicious PDF — malware analysis report

Static analysis result for SHA-256 92edb23462da296b…

MALICIOUS

PDF

32.5 KB Created: 2021-07-20 18:00:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b347ee0ff3175c75580f31375bdf6f1f SHA-1: d422922ffc8daad38f1b233259907cd849f81123 SHA-256: 92edb23462da296b8bcd856f0f3c88648ab7f4c25728dfea2f2af15bbb00cb63
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising "free generators" and "game hacks" for popular games. The primary redirector URL is http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely leading to a phishing or malware download site. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/how-to-get-minecraft-for-free-game-hack In PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-robux_GM431946152.pdfIn PDF document text
    • https://bisnisrakminimarket.com/ckfinder/userfiles/files/free-robux-not-fake_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
font_00_sfnt_off00002e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6F 21848 bytes
SHA-256: f9865b8c8c519788433b069d78a54d854bf08789640087ab3fd2810cf9be4e9a
font_01_sfnt_off00005e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4B 17872 bytes
SHA-256: 6fa695b9296659f7eb743de2dcac64eb87e125e0d99966acf8bb7a2f268f66d6

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