Malicious PDF — malware analysis report

Static analysis result for SHA-256 9303e61cfc1f0e90…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 00:44:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 93cc18e26fc12f218c9a5d1ecfd1a77e SHA-1: 3483af11b81cd6533fa984849b95a2a89d41f3a6 SHA-256: 9303e61cfc1f0e90812bdb7708b7be8d7ddae9394598260a6438ab7daa03cdca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure URL is http://netcdn.co/app/431946152/free-katana-in-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to potentially malicious websites, likely for credential harvesting or further 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.co/app/431946152/free-katana-in-roblox-game-hack In PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-robux-no-hack-or-download-2021_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/zombie-rush-roblox-hack-v3rmillion_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/oprewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-unblock-roblox-hack-a-wifi-password_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-chat-cheats-on-rocitizens_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/can-i-play-minecraft-for-free_GM479516143.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_off000030ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AB 22392 bytes
SHA-256: c3fa333d442a3f9e13e990a8b0ee6b7d6b7ed0ab1ca65ce6ffe0c4c874761942
font_01_sfnt_off0000629e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629E 18752 bytes
SHA-256: 13e545eaed2fcc6047a66c38c22345484c4ef986bcac175bb2006e6fefc2a855

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