Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e4d0d2807ce461…

MALICIOUS

PDF

35.3 KB Created: 2021-07-07 21:27:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: daef547be978c09389cb550dce7a88fe SHA-1: c9b960211f48b688e22935427028e2725c6b1ad6 SHA-256: 44e4d0d2807ce461b4fe205146d684a90f7341ccb979d2c0ce553b3dd929caf9
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/479516143/minecraft-ios-mods-game-hack PDF link annotation
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/capture-flag-map-roblox-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/roblox-studio-mac-download-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/pastebin-roblox-vip-free-robux-no-wait_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn12madiun.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_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_off0000358c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x358C 22540 bytes
SHA-256: efe99dd654796a6413b471727f68313ca562925167228a97fca6e25c98fefd7a
font_01_sfnt_off000067d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D8 18172 bytes
SHA-256: 56b22b05c6c29367c4c938ecbda02e8ba185ee7da968fb32465555374010e690

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