Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b973e95c55892c…

MALICIOUS

PDF

31.7 KB Created: 2021-07-19 22:31:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e083404f7240d39c78be75d91fd24771 SHA-1: 78e4358c5fa0e193ccb055f1c8e8e930774ad9d9 SHA-256: 38b973e95c55892ca901588f9399dc10f03dd9c1a4d3154d65d6d3e4a9181af8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as 'game hacks' or 'free generators' to lure victims. The document body explicitly contains the URL http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-on-mobile-game-hack, which is flagged as a malicious redirector. The presence of embedded URLs and the ML classifier output strongly indicate malicious intent.

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-on-mobile-game-hack In PDF document text
    • http://hondenspecialist-engelien.nl/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/coin-master-daily-free-spins-link-today_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_off000029f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29F7 22264 bytes
SHA-256: 0d16ee6e0e4870bc28e05b9b7ccd2f55411aa55098f1c9576bb02f140d238469
font_01_sfnt_off00005a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A86 18104 bytes
SHA-256: 355b14cb1237cfcb324f2687d1fc3cafef0ca686705333751d3cf0333155011f

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