Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fdd0c9cf3dd669b…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 23:31:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 91fcac9a209f12c12908c20a9a247f02 SHA-1: e0a0672041007e802bc59ddf193ff00e5f67673d SHA-256: 4fdd0c9cf3dd669bd071ca02bb2fe182e62ff08611b64252fe261a4aa5b42f7b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as content related to game hacks and free currency for games like Roblox. The document body and heuristics indicate a lure to trick users into visiting these malicious sites, likely to download further malware or engage in phishing. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful content.

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.co/app/431946152/how-to-speed-hack-on-roblox-mad-paintball-mac-game-hack In PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/free-promo-codes-2021-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/lol-robloxcant-patch-the-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/how-do-you-get-1m-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/jail-break-roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-animations-on-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/flamegg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/teleport-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/hacking-tools-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/roblox-money-hack-no-download_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/auto-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/free-things-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/roblox-fre-fsp_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/only-working-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1yogyakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps_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_off000030c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C3 22020 bytes
SHA-256: 333d053b00ccfc6a134970f193cc1b2c0e85b04bd9d98a6b81a8de6f9b6cff99
font_01_sfnt_off00006139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6139 19744 bytes
SHA-256: 4a448bfdfd661d4e30a2d3e47e51b2bb1e130f5b9f181bd10800649b0ec1ff37

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