Malicious PDF — malware analysis report

Static analysis result for SHA-256 872fcc12379f6122…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 14:23:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 78605b6bd6e3100b565eb03b892480e2 SHA-1: d557515103bed67e376e18c92c4bf6ebc5159542 SHA-256: 872fcc12379f61227fd3d25daabd1512a0544f2bfe86c0317cc3a657fde3cb2e
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-roblox-hair-codes-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/roblox-apoc-hacks_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-hack-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-denis-daily_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-use-pastebin-hacks-to-swear-in-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hackear-roblox-android_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-accounts-2021-august_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/gete-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/10m-8-7m-17-free-robux-daily-robuxian_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-no-download_GM479516143.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_off00002e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4A 21640 bytes
SHA-256: 595b541d80272709e22c87b19e4522f31bb18852aa84264e81f352e3cec9dd8d
font_01_sfnt_off00005dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC8 18944 bytes
SHA-256: 862acc36ed5440578e40434f1350d12f0f63b351092f434064dd81eacc8a0ce8

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