Malicious PDF — malware analysis report

Static analysis result for SHA-256 9000a13a8a987765…

MALICIOUS

PDF

33.6 KB Created: 2021-06-20 07:21:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8cf99a68690b2aae0bd5802e8aa3f3e5 SHA-1: a9800a99d09402de514ecb914aeddb1f59c57d87 SHA-256: 9000a13a8a98776549769d837bf24bc9eab1617403c1497c227c0e6580f9df2b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-robux-adder-game-hack PDF link annotation
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/roblox-tuto-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/tiktok-2021-free-download_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-hack-someones-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/free-for-mobile-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/free-synapse-x-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/how-to-hack-a-trade-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3indramayu.sch.id/__statics/gudangsoal/files/coin-master-free-coins_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_off00002e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9E 21776 bytes
SHA-256: 9864f432bab3dc602bd7f00ebff8ea0c937573306347c0adc15b803009c67698
font_01_sfnt_off00005e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 18888 bytes
SHA-256: fed93a57f9ebc49998933260645548d38829a68d40f64c31f5643833283864c8

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