Malicious PDF — malware analysis report

Static analysis result for SHA-256 35260b048daec4dc…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 10:50:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f6189dfcbbe6da3fb7a7b06ca0984169 SHA-1: d118b59e26e78fd01cad82ac5a835e346cabd4b6 SHA-256: 35260b048daec4dce0ff70ca5902a4759b8b5fa7c2c968dac0a6eb1ca7eb1b86
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external sites, including a known malicious redirector at http://netcdn.co/app/431946152/legends-of-speed-roblox-hack-game-hack. These links are presented as lures for game hacks and free currency, indicating a phishing or scam attempt. The document body and heuristics confirm the intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/legends-of-speed-roblox-hack-game-hack In PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-free-items-game_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/hacks-for-vehicle-simulator-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/descargar-asshurt-v32-hack-para-roblox-torrent_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/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/robux-xyz_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_off00003076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3076 22268 bytes
SHA-256: 8c45a265baf3bbbd7fbbfdba77c3c658c2506760b934b107d19e3bb7cb20361f
font_01_sfnt_off000061f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F1 19008 bytes
SHA-256: b2ff0e9a6ab9e9783f3064fd1f3fcabfcafa027ca9f3bdc755541eda2fb3bc5b

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