Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d4c988f0f6c1ff…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 15:44:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e9b17707d81ec4fc45b2f971b0fb01df SHA-1: 33bfc1a0209f698004d58e58d579582fa737f18f SHA-256: 11d4c988f0f6c1ff7badd1d583e2ab6f5867b1d799be91d7477dbffd31bac90a
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/431946152/free-robux-app-real-game-hack PDF link annotation
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/robux-hack-no-verification-or-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/how-to-get-free-auto-clicker-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/roblox-polyguns-hack-credits_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/roblox-speed-hack-download-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2bandarlampung.sch.id/__statics/gudangsoal/files/free-enter-pin-in-roblox_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_off000031df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DF 22572 bytes
SHA-256: e90d36a7755ec6e2010f0ba66b891497d26ba2e9606332889a6c586369aeb04b
font_01_sfnt_off00006469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 18968 bytes
SHA-256: 40e70f9896c1d2dd73ce0a34c726294904c345e0ceccadb112d3bcb1bf7365a7

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