Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69cffa3881a6152…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 12:18:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 96b438e903fc4f20a15ac1b1514ba0a6 SHA-1: 35bb48529badbdbe5fd042b1da0b22d28bb29704 SHA-256: a69cffa3881a61520a755d8c5a9bec7d01bcca8e508e6a802144c64873d09f69
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.tw/app/406889139/how-to-get-to-village-3-in-coin-master-game-hack PDF link annotation
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/pokemon-go-free-coins-hack_GM1094591345.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-august_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/all-roblox-gamepasses-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-robux-no-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_off0000343a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343A 22792 bytes
SHA-256: 2324706c3ece43594f6a39d40f5e94080530b2ac0eaa5f6672a1cb6053ebb688
font_01_sfnt_off00006769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6769 18380 bytes
SHA-256: 719c44d621eea83d2118d585285fa0da07fb34d8e905b2248b9284b96b456eb4

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